#include <iostream>
using namespace std;
int mod = 1e9+7;

int main() {
	long long a, b; cin>>a>>b;
	long long o = ((a+1)/2)*2, e = (a/2)*2+1;
	long long f = ((b+1)/2)*2, h = (b/2)*2+1;
	cout<<(((f%mod) * (o%mod)) + ((e%mod) * (h%mod)))%mod;
	return 0;
}