#include <iostream>
#include <string>
#include <vector>
#include <utility>
#include <algorithm>
#include <functional>


using namespace std;

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