#define _CRT_SECURE_NO_WARNINGS #include "bits/stdc++.h" //#include "util.h" using namespace std; //呪文 #define DUMPOUT cout #define dump(...) DUMPOUT<<" ";DUMPOUT<<#__VA_ARGS__<<" :["<<__LINE__<<":"<<__FUNCTION__<<"]"< pii; typedef pair pll; template using Mat = vector>; template ostream& operator << (ostream& ostr, const pair<_KTy, _Ty>& m) { cout << "{" << m.first << ", " << m.second << "}"; return ostr; } template ostream& operator << (ostream& ostr, const map<_KTy, _Ty>& m) { if (m.empty()) { cout << "{ }"; return ostr; } cout << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } template ostream& operator << (ostream& ostr, const vector<_Ty>& v) { if (v.empty()) { cout << "{ }"; return ostr; } cout << "{" << v.front(); for (auto itr = ++v.begin(); itr != v.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } template ostream& operator << (ostream& ostr, const set<_Ty>& s) { if (s.empty()) { cout << "{ }"; return ostr; } cout << "{" << *(s.begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } template ostream& operator << (ostream& ostr, const stack<_Ty>& s) { if (s.empty()) { cout << "{ }"; return ostr; } stack<_Ty> t(s); cout << "{" << t.top(); t.pop(); while (!t.empty()) { cout << ", " << t.top(); t.pop(); } cout << "}"; return ostr; } template istream& operator >> (istream& istr, pair<_KTy, _Ty>& m) { cin >> m.first >> m.second; return istr; } template istream& operator >> (istream& istr, vector<_Ty>& v) { for (size_t i = 0; i < v.size(); i++) cin >> v[i]; return istr; } ll modpow(ll n, ll p, ll m) { ll result = 1; while (p > 0) { if (p & 1) result = (result * n) % m; p >>= 1; n = (n * n) % m; } return result; } template _Ty ipow(_Ty x, _Ty n) { _Ty ret = _Ty(1); for (_Ty i = _Ty(0); i < n; i++) ret *= x; return ret; } template inline void Fill(A(&array)[N], const T &val) { std::fill((T*)array, (T*)(array + N), val); } void dump_func() { DUMPOUT << endl; } template void dump_func(Head&& head, Tail&&... tail) { DUMPOUT << head; if (sizeof...(Tail) == 0) { DUMPOUT << " "; } else { DUMPOUT << ", "; } dump_func(std::move(tail)...); } #define PI 3.14159265358979323846 #define EPS 1e-8 #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) #define all(x) (x).begin(), (x).end() #define fake false const ll MOD = 1000000007; ll dp[10010][2][2][3][8]; // digit, less, has 3, mod 3, mod 8 (size 960000) ll count(string A) { int n = A.size(); Fill(dp, 0); dp[0][0][0][0][0] = 1; REP(i, n) REP(j, 2) REP(k, 2) REP(l, 3) REP(m, 8) { int lim = j ? 9 : A[i] - '0'; REP(d, lim + 1) { (dp[i + 1][j || d < lim][k || d == 3][(l + d) % 3][(m * 10 + d) % 8] += dp[i][j][k][l][m]) %= MOD; } } ll res = 0; REP(j, 2) REP(k, 2) REP(l, 3) REP(m, 8) { if ((k || l == 0) && m != 0) { (res += dp[n][j][k][l][m]) %= MOD; } } return res; } string decrement(string A) { int n = A.size(); vector d(n, 0); REP(i, n) d[i] = A[i] - '0'; d[n - 1]--; for (int i = n - 1; i > 0; i--) { if (d[i] < 0) { d[i] += 10; d[i - 1]--; } } bool z = true; string res; for (int i = 0; i < d.size(); i++) { if (z && d[i]) z = false; if (!z) res.push_back('0' + d[i]); } return res.empty() ? "0" : res; } int main() { //clock_t start, end; //start = clock(); string A, B; cin >> A >> B; cout << (count(B) - count(decrement(A)) + MOD) % MOD << endl; //end = clock(); //printf("%d msec.\n", end - start); return 0; }