tests = int(input())

for t in range(tests):
    n, a, b = [int(j) for j in input().split()]
    if n != a * b:
        print("NO")
        continue
    if len(str(a)) != len(str(b)) or len(str(a)) * 2 != len(str(n)):
        print("NO")
        continue
    if not (a % 10) and not (b % 10):
        print("NO")
        continue
    n_digits = list(str(n))
    n_digits.sort()
    ab_digits = list(str(a) + str(b))
    ab_digits.sort()
    if n_digits != ab_digits:
        print("NO")
        continue
    print("YES")