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

int sum(int a, int b){
	return (a+b)%mod;
}

int mul(int a,int b){
	long long g = (1LL*a*b)%mod;
	return (int) g;
}

int main() {
	int a, b; cin>>a>>b;
	int o = ((a+1)/2)*2, e = (a/2)*2+1;
	cout<<sum(mul(o,((b+1)/2)*2),mul(e,(b/2)*2+1));
	return 0;
}