#include <cassert>// c
#include <iostream>// io
#include <iomanip>
#include <fstream>
#include <sstream>
#include <vector>// container
#include <map>
#include <set>
#include <queue>
#include <bitset>
#include <stack>
#include <algorithm>// other
#include <complex>
#include <numeric>
#include <functional>
#include <random>
#include <regex>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;

#define ALL(c) (begin(c)),(end(c))
#define REP(i,n) FOR(i,0,n)
#define REPr(i,n) FORr(i,0,n)
#define FOR(i,l,r) for(int i=(int)(l);i<(int)(r);++i)
#define FORr(i,l,r) for(int i=(int)(r)-1;i>=(int)(l);--i)
#define EACH(it,o) for(auto it = (o).begin(); it != (o).end(); ++it)
#define IN(l,v,r) ((l)<=(v) && (v)<(r))
#define UNIQUE(v) v.erase(unique(ALL(v)),v.end())
//debug
#define DUMP(x)  cerr << #x << " = " << (x)
#define LINE()    cerr<< " (L" << __LINE__ << ")"

class range {
private:
    struct Iter{
        int v;
        int operator*(){return v;}
        bool operator!=(Iter& itr) {return v < itr.v;}
        void operator++() {++v;}
    };
    Iter i, n;
public:
    range(int n) : i({0}), n({n}) {}
    range(int i, int n) : i({i}), n({n}) {}
    Iter& begin() {return i;}
    Iter& end() {return n;}
};

//input
template<typename T1,typename T2> istream& operator >> (istream& is,pair<T1,T2>& p){is>>p.first>>p.second;return is;}
template<typename T1> istream& operator >> (istream& is,tuple<T1>& t){is >> get<0>(t);return is;}
template<typename T1,typename T2> istream& operator >> (istream& is,tuple<T1,T2>& t){is >> get<0>(t) >> get<1>(t);return is;}
template<typename T1,typename T2,typename T3> istream& operator >> (istream& is,tuple<T1,T2,T3>& t){is >>get<0>(t)>>get<1>(t)>>get<2>(t);return is;}
template<typename T1,typename T2,typename T3,typename T4> istream& operator >> (istream& is,tuple<T1,T2,T3,T4>& t){is >> get<0>(t)>>get<1>(t)>>get<2>(t)>>get<3>(t);return is;}
template<typename T1,typename T2,typename T3,typename T4,typename T5> istream& operator >> (istream& is, const tuple<T1,T2,T3,T4,T5>& t){is >> get<0>(t) >> get<1>(t) >> get<2>(t) >> get<3>(t) >> get<4>(t);return is;}
template<typename T1,typename T2,typename T3,typename T4,typename T5,typename T6> istream& operator >> (istream& is, const tuple<T1,T2,T3,T4,T5,T6>& t){is >> get<0>(t) >> get<1>(t) >> get<2>(t) >> get<3>(t) >> get<4>(t) >> get<5>(t);return is;}
template<typename T1,typename T2,typename T3,typename T4,typename T5,typename T6,typename T7> istream& operator >> (istream& is, const tuple<T1,T2,T3,T4,T5,T6,T7>& t){is >> get<0>(t) >> get<1>(t) >> get<2>(t) >> get<3>(t) >> get<4>(t) >> get<5>(t) >> get<6>(t);return is;}
template<typename T> istream& operator >> (istream& is,vector<T>& as){REP(i,as.size())is >>as[i];return is;}

//output
template<typename T> ostream& operator << (ostream& os, const set<T>& ss){for(auto a:ss){if(a!=ss.begin())os<<" "; os<<a;}return os;}
template<typename T1,typename T2> ostream& operator << (ostream& os, const pair<T1,T2>& p){os<<p.first<<" "<<p.second;return os;}
template<typename K,typename V> ostream& operator << (ostream& os, const map<K,V>& m){bool isF=true;for(auto& p:m){if(!isF)os<<endl;os<<p;isF=false;}return os;}
template<typename T1> ostream& operator << (ostream& os, const tuple<T1>& t){os << get<0>(t);return os;}
template<typename T1,typename T2> ostream& operator << (ostream& os, const tuple<T1,T2>& t){os << get<0>(t)<<" "<<get<1>(t);return os;}
template<typename T1,typename T2,typename T3> ostream& operator << (ostream& os, const tuple<T1,T2,T3>& t){os << get<0>(t)<<" "<<get<1>(t)<<" "<<get<2>(t);return os;}
template<typename T1,typename T2,typename T3,typename T4> ostream& operator << (ostream& os, const tuple<T1,T2,T3,T4>& t){os << get<0>(t)<<" "<<get<1>(t)<<" "<<get<2>(t)<<" "<<get<3>(t);return os;}
template<typename T1,typename T2,typename T3,typename T4,typename T5> ostream& operator << (ostream& os, const tuple<T1,T2,T3,T4,T5>& t){os << get<0>(t)<<" "<<get<1>(t)<<" "<<get<2>(t)<<" "<<get<3>(t)<<" "<<get<4>(t);return os;}
template<typename T1,typename T2,typename T3,typename T4,typename T5,typename T6> ostream& operator << (ostream& os, const tuple<T1,T2,T3,T4,T5,T6>& t){os << get<0>(t)<<" "<<get<1>(t)<<" "<<get<2>(t)<<" "<<get<3>(t)<<" "<<get<4>(t)<<" "<<get<5>(t);return os;}
template<typename T1,typename T2,typename T3,typename T4,typename T5,typename T6,typename T7> ostream& operator << (ostream& os, const tuple<T1,T2,T3,T4,T5,T6,T7>& t){os << get<0>(t)<<" "<<get<1>(t)<<" "<<get<2>(t)<<" "<<get<3>(t)<<" "<<get<4>(t)<<" "<<get<5>(t)<<" "<<get<6>(t);return os;}
template<typename T> ostream& operator << (ostream& os, const vector<T>& as){REP(i,as.size()){if(i!=0)os<<" "; os<<as[i];}return os;}
template<typename T> ostream& operator << (ostream& os, const vector<vector<T>>& as){REP(i,as.size()){if(i!=0)os<<endl; os<<as[i];}return os;}

//input
char tmp[1000];
#define nextInt(n) scanf("%d",&n)
#define nextLong(n) scanf("%lld",&n) //I64d
#define nextDouble(n) scanf("%lf",&n) 
#define nextChar(n) scanf("%c",&n)
#define nextString(n) scanf("%s",tmp);n=tmp

// values
template<typename T> T INF(){assert(false);};
template<> int INF<int>(){return 1<<28;};
template<> ll INF<ll>(){return 1LL<<58;};
template<> double INF<double>(){return 1e16;};
template<> long double INF<long double>(){return 1e16;};

template<class T> T EPS(){assert(false);};
template<> int EPS<int>(){return 1;};
template<> ll EPS<ll>(){return 1LL;};
template<> double EPS<double>(){return 1e-8;};
template<> long double EPS<long double>(){return 1e-8;};

template<typename T,typename U> T pmod(T v,U M){return (v%M+M)%M;}


template <ll M=(ll)1e9+7> class modU{
public:
    inline ll pmod(ll v){return (v%M+M)%M;}
    inline ll ainv(ll a){return pmod(-a);}
    inline ll add(ll a,ll b){return pmod(a+b);}
    inline ll mul(ll a,ll b){return pmod(a*b);}
    ll pow(ll x, ll N){
        ll res=1;
        while(N>0){
            if(N%2)res=mul(res,x);
            x=mul(x,x);
            N/=2;
        }
        return res;
    }

    //O(logM)
    inline ll minv(ll a){return pow(a,M-2);}

    // O(M)
    vector<ll> minvs(){
        vector<ll> inv(M + 1);inv[1] = 1;
        for (int i = 2; i <= M; ++i)inv[i] = mul(inv[M % i],M - M / i);
        return inv;
    }

    //O(N) 条件 N>=0 
    vector<ll> factmemo=vector<ll>(2000050,-1);
    inline ll fact(const int N){
        factmemo[0]=1;
        int l = N; while(factmemo[l]==-1)l--;
        for(int v:range(l,N)) factmemo[v+1]=mul(v+1,factmemo[v]);
        return factmemo[N];
    }
    //条件 N>=0
    inline ll nPr(const int N,const int r){
        if(r>N)return 0;
        return mul(fact(N),minv(fact(N-r)));
    }
    inline ll nCr(const int N,const int r){
        if(N<0){
            if(0 <= r) return (r%2?-1:+1)*nCr(-N +r-1,r);
            else if(r<=N) return ((N-r)%2?-1:+1)*nCr(-r-1,N-r);
            else return 0;
        }
        if(0<= r && r<=N) return mul(mul(fact(N),minv(fact(r))),minv(fact(N-r)));
        return 0;
    }

    // O(N^2) (no mod N<=66)
    vector<vector<ll>> nCrs(const int N){
        vector<vector<ll>> c(N,vector<ll>(N,0));for(int i:range(0,N))c[i][0]=1;
        for(int i :range(1,N))for(int j:range(1,N))
            c[i][j] = add(c[i-1][j-1],c[i-1][j]);
        return c;
    }
};



ll MOD = 1e9+7;

// 下三桁
class Main{
    public:
    modU<> mu;

    ll aho(string s){
        // bounded されている？
        vector<vector<vector<ll>>> dp(2,vector<vector<ll>>(3,vector<ll>(2)));
        dp[1][0][0]=1;
        for(int i=0;i<s.size();i++){
            vector<vector<vector<ll>>> ndp(2,vector<vector<ll>>(3,vector<ll>(2)));
            for(int v=0;v<=9;v++){
                for(int b=0;b<2;b++)for(int m3=0;m3<3;m3++)for(int ex3=0;ex3<2;ex3++){
                    if(v < s[i]-'0'){
                        ndp[0][(m3+v)%3][ex3 || v==3]+= dp[b][m3][ex3];
                        ndp[0][(m3+v)%3][ex3 || v==3]%=MOD;
                    }else if(v == s[i]-'0'){
                        ndp[b][(m3+v)%3][ex3 || v==3]+= dp[b][m3][ex3];
                        ndp[b][(m3+v)%3][ex3 || v==3]%=MOD;
                    }else if(v > s[i]-'0' && !b){
                        ndp[b][(m3+v)%3][ex3 || v==3]+= dp[b][m3][ex3];
                        ndp[b][(m3+v)%3][ex3 || v==3]%=MOD;
                    }
                }
            }
            dp = ndp;
        }
        ll res = 0;
        for(int b=0;b<2;b++)for(int m3=0;m3<3;m3++)for(int ex3=0;ex3<2;ex3++){
            if((m3==0 || ex3))res+=dp[b][m3][ex3],res%=MOD;
        }
        return res;
    }

    ll cnt(string s,int p){
        // bounded されている？
        vector<vector<vector<vector<ll>>>> dp(2,vector<vector<vector<ll>>>(3,vector<vector<ll>>(2,vector<ll>(8))));
        dp[1][0][0][0]=1;
        for(int i=0;i<s.size()-p;i++){
            vector<vector<vector<vector<ll>>>> ndp(2,vector<vector<vector<ll>>>(3,vector<vector<ll>>(2,vector<ll>(8))));

            for(int v=0;v<=9;v++){
                for(int b=0;b<2;b++)for(int m3=0;m3<3;m3++)for(int ex3=0;ex3<2;ex3++){
                    if(s.size()-p-i<=3)for(int m8=0;m8<8;m8++){
                        ll pw = mu.pow(10,min<int>(s.size()-p - 1 - i,3));
                        if(v < s[i]-'0'){
                            ndp[0][(m3+v)%3][ex3 || v==3][(m8+v*pw)%8]+= dp[b][m3][ex3][m8];
                            ndp[0][(m3+v)%3][ex3 || v==3][(m8+v*pw)%8]%=MOD;
                        }else if(v == s[i]-'0'){
                            ndp[b][(m3+v)%3][ex3 || v==3][(m8+v*pw)%8]+= dp[b][m3][ex3][m8];
                            ndp[b][(m3+v)%3][ex3 || v==3][(m8+v*pw)%8]%=MOD;
                        }else if(v > s[i]-'0' && !b){
                            ndp[b][(m3+v)%3][ex3 || v==3][(m8+v*pw)%8]+= dp[b][m3][ex3][m8];
                            ndp[b][(m3+v)%3][ex3 || v==3][(m8+v*pw)%8]%=MOD;
                        }
                    }else{
                        if(v < s[i]-'0'){
                            ndp[0][(m3+v)%3][ex3 || v==3][0]+= dp[b][m3][ex3][0];
                            ndp[0][(m3+v)%3][ex3 || v==3][0]%=MOD;
                        }else if(v == s[i]-'0'){
                            ndp[b][(m3+v)%3][ex3 || v==3][0]+= dp[b][m3][ex3][0];
                            ndp[b][(m3+v)%3][ex3 || v==3][0]%=MOD;
                        }else if(v > s[i]-'0' && !b){
                            ndp[b][(m3+v)%3][ex3 || v==3][0]+= dp[b][m3][ex3][0];
                            ndp[b][(m3+v)%3][ex3 || v==3][0]%=MOD;
                        }
                    }
                }
            }
            dp = ndp;
        }
        ll res = 0;
        for(int b=0;b<2;b++)for(int m3=0;m3<3;m3++)for(int ex3=0;ex3<2;ex3++)for(int m8=0;m8<8;m8++){
            if((m3==0 || ex3) && m8==0)res+=dp[b][m3][ex3][m8],res%=MOD;
        }
        return res;
    }

    void run(){
        string a,b;cin >> a >> b; int p;cin >> p;
        int d = p==800?2:p==80?1:0;
        // -1
        for(int i=a.size()-1;i>=0;i--){
            if(a[i]=='0')a[i]='9';
            else{
                a[i]--;break;
            }
        }
        cout << mu.pmod(mu.pmod(aho(b)-cnt(b,d)) - mu.pmod(aho(a)-cnt(a,d)))<<endl;
    }
};

int main(){
    cout <<fixed<<setprecision(20);
    cin.tie(0);
    ios::sync_with_stdio(false);
    Main().run();
    return 0;
}