T = int(input())
mod = 998244353
A = [0] * T
for i in range(T):
    A[i] = list(map(int, input().split()))

ans = []
for i in range(T):
    a, b, c = A[i]

    ans.append(((a**2 + b**2 + c**2) * pow(c**2, mod-2, mod)) % mod)

for x in ans:
    print(x)