def solve():
    A, B, C = map(int, input().split())

    Mod = 998244353
    A2 = (A * A) % Mod
    B2 = (B * B) % Mod

    return (1 + (A2 + B2) * pow(C, -2, Mod)) % Mod

#==================================================
import sys
input=sys.stdin.readline
write=sys.stdout.write

T = int(input())
write("\n".join(map(str, [solve() for _ in range(T)])))