#include<bits/stdc++.h>
using namespace std;
using LL=long long;
using ULL=unsigned long long;
#define rep(i,n) for(int i=0; i<(n); i++)

int main() {
	ULL a, b; cin >> a >> b;
	cout << (a * b % 1000000007) << endl;
	return 0;
}