#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll MOD = 1000000007;
const long long INF = 1LL << 60;
#define rep(i,n) for(int i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()

int main() {
    ll a, b;
    cin >> a >> b;
    cout << (((a/2*2+1)%MOD*(b/2+1)%MOD)%MOD+((a+1)/2*2%MOD*((b+1)/2%MOD))%MOD)%MOD << endl;
}