#include "bits/stdc++.h" using namespace std; #define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i)) #define rep(i,j) FOR(i,0,j) #define each(x,y) for(auto &(x):(y)) #define mp make_pair #define all(x) (x).begin(),(x).end() #define debug(x) cout<<#x<<": "<<(x)< pii; typedef vector vi; typedef vector vll; template class ModInt{ public: ModInt():value(0){} ModInt(long long val):value((int)(val<0?MOD+val%MOD:val%MOD)){ } ModInt& operator+=(ModInt that){ value = value+that.value; if(value>=MOD)value-=MOD; return *this; } ModInt& operator-=(ModInt that){ value -= that.value; if(value<0)value+=MOD; return *this; } ModInt& operator*=(ModInt that){ value = (int)((long long)value * that.value % MOD); return *this; } ModInt &operator/=(ModInt that){ return *this *= that.inverse(); } ModInt operator+(ModInt that) const{ return ModInt(*this)+=that; } ModInt operator-(ModInt that) const{ return ModInt(*this)-=that; } ModInt operator*(ModInt that) const{ return ModInt(*this)*=that; } ModInt operator/(ModInt that) const { return ModInt(*this) /= that; } ModInt operator^(long long k) const{ if(value == 0)return 0; ModInt n = *this, res = 1; while(k){ if(k & 1)res *= n; n *= n; k >>= 1; } return res; } ModInt inverse() const { long long a = value, b = MOD, u = 1, v = 0; while(b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } return ModInt(u); } int toi() const{ return value; } private: int value; }; typedef ModInt<1000000007> mint; ostream& operator<<(ostream& os, const mint& x){ os << x.toi(); return os; } string nstr(){ static const int MAX_LEN = 100001; static char res_[MAX_LEN]; scanf("%s",res_); return string(res_); } mint dp[10010][24][2][2]; string A, B; mint f(string s){ rep(i, sz(s) + 1)rep(j, 24)rep(k, 2)rep(l, 2)dp[i][j][k][l] = 0; dp[0][0][0][0] = 1; rep(i, sz(s))rep(md24, 24)rep(d3, 2)rep(les, 2){ mint val = dp[i][md24][d3][les]; if(val.toi() == 0)continue; rep(d, 10){ int nMd24 = (md24 * 10 + d)%24, nD3 = d3|(d==3), nLes = les|(d s[i])break; dp[i + 1][nMd24][nD3][nLes] += val; } } mint res = 0; rep(md24, 24)rep(d3, 2)rep(les, 2){ mint val = dp[sz(s)][md24][d3][les]; if((d3 || md24 % 3 == 0) && md24 % 8)res += val; } return res; } int main(){ A = nstr(); B = nstr(); each(a, A)a -= '0'; each(b, B)b -= '0'; for(int i = sz(A) - 1; i >= 0; i--){ if(A[i] == 0)A[i] = 9; else{ A[i]--; break; } } mint ans = f(B); ans -= f(A); cout << ans << endl; }