#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)



int mod = 1000000007;
int add(int x, int y) { return (x += y) >= mod ? x - mod : x; }
template<class... T> int add(int x, T... y) { return add(x, add(y...)); }
int mul(int x, int y) { return 1LL * x * y % mod; }
template<class... T> int mul(int x, T... y) { return mul(x, mul(y...)); }
int sub(int x, int y) { return add(x, mod - y); }
int modpow(int a, long long b) { int ret = 1; while (b > 0) { if (b & 1) ret = 1LL * ret * a % mod; a = 1LL * a * a % mod; b >>= 1; } return ret; }
int modinv(int a) { return modpow(a, mod - 2); }

int fac[201010], ifac[201010];
void initfac() {
    fac[0] = ifac[0] = 1;
    rep(i, 1, 201010) fac[i] = 1LL * i * fac[i - 1] % mod;
    rep(i, 1, 201010) ifac[i] = modinv(fac[i]);
}
int aCb(int a, int b) {
    if (b < 0 || a < b) return 0;
    return (1LL * fac[a] * ifac[a - b] % mod) * ifac[b] % mod;
}
//-----------------------------------------------------------------------------------
int P;
int dp[2][2400][2][2];
int count(string S) {
    int n = S.length();
    rep(i, 0, 2) rep(j, 0, 2400) rep(k, 0, 2) rep(l, 0, 2) dp[i][j][k][l] = 0;

    dp[0][0][0][1] = 1;
    rep(_i, 0, n) {
        int i = _i % 2, ii = (_i + 1) % 2;
        int cc = S[_i] - '0';
        rep(j, 0, 2400) rep(k, 0, 2) rep(l, 0, 2) dp[ii][j][k][l] = 0;
        rep(j, 0, 2400) rep(k, 0, 2) rep(l, 0, 2) {
            int ma = 10;
            if (l == 1) ma = cc + 1;
            rep(c, 0, ma) {
                int jj = (j * 10 + c) % 2400;
                int kk = k | (c == 3);
                int ll;

                if (l == 1 && c == cc) ll = 1;
                else ll = 0;

                dp[ii][jj][kk][ll] = add(dp[ii][jj][kk][ll], dp[i][j][k][l]);
            }
        }
    }

    int res = 0;
    int nn = n % 2;
    rep(j, 0, 2400) rep(l, 0, 2) if (j % P != 0) {
        res = add(res, dp[nn][j][1][l]);
    }
    rep(j, 0, 2400) rep(l, 0, 2) if (j % 3 == 0 && j % P != 0) {
        res = add(res, dp[nn][j][0][l]);
    }
    return res;
}
//-----------------------------------------------------------------------------------
bool chk(string S) {
    int mo = 0;
    for (char c : S) mo = (mo * 10 + c - '0') % 2400;

    bool aho = (mo % 3 == 0);
    for (char c : S) if (c == '3') aho = true;

    bool seishun = (mo % P == 0);

    return aho && !seishun;
}
//-----------------------------------------------------------------------------------
int main() {
    string A, B; cin >> A >> B >> P;

    int ans = sub(count(B), count(A));
    if (chk(A)) ans = add(ans, 1);
    cout << ans << endl;
}