from itertools import accumulate
Primes_MAX = 10 ** 5 + 100
Primes = []
Sieve = [0] * Primes_MAX
Sieve[0] = Sieve[1] = -1
for p in range(2, Primes_MAX):
    if not Sieve[p]:
        Primes.append(p)
        Sieve[p] = p
        for q in range(p * p, Primes_MAX, p):
            if not Sieve[q]:
                Sieve[q] = p

acc = [0] * Primes_MAX
for p in Primes:
    acc[p] += 1
acc = list(accumulate(acc))

for _ in range(int(input())):
    n, p, q = map(int, input().split())
    scc = acc[n] / n * p / 100
    fail = (1 - acc[n] / n) * (1 - q / 100)
    print(f'{scc / (scc + fail):.10f}')