#include<bits/stdc++.h>

int main(){
    using namespace std;
    constexpr unsigned long MOD{1000000007};
    unsigned long A, B;
    cin >> A >> B;
    unsigned long a{A / 2 % MOD}, b{B / 2 % MOD};
    cout << ((2 * a + 1) * (2 * b + 1) + (a + (A & 1)) * (b + (B & 1)) * 4) % MOD << endl;
    return 0;
}