a, b = map(int, input().split())
MOD = 10 ** 9 + 7


aa = 2 * (a // 2) + 1
bb = 2 * ((a + 1) // 2)
li = [aa, bb]
ans = li[0] * (2 * ((b + 2) // 2) - 1)
ans += li[1] * 2 * ((b + 1) // 2)
ans %= MOD
print(ans)


def naive(a, b):
    ans = 0
    for i in range(-100, 100):
        for j in range(-100, 100):
            if abs(i + j) <= a and abs(i - j) <= b:
                ans += 1
    print(ans)