# Problem Description
# In a crossover fantasy universe, Houin Kyoma is up in a battle 
# against a powerful monster Nomu that can kill him in a single blow. 
# However being a brilliant scientist Kyoma found a way to pause time 
# for exactly M seconds. Each second, Kyoma attacks Nomu with certain 
# power, which will reduce his health points by that exact power. 
# Initially Nomu has H Health Points. Nomu dies when his Health 
# Points reach 0. Normally Kyoma performs Normal Attack with power A. 
# Besides from Kyoma’s brilliance, luck plays a major role in events 
# of this universe. Kyoma’s Luck L is defined as probability of 
# performing a super attack. A super attack increases power of Normal 
# Attack by C. Given this information calculate and print the 
# probability that Kyoma kills Nomu and survives. If Kyoma dies print 
# “RIP”.

# Constraints
# 0 < T <= 50
# 1 <= A, H, C, L1, L2 <= 1000
# 1 <= M <= 20.
# L1<=L2

# Input Format
# First line is integer T denoting number of test cases.
# Each test case consist of single line with space separated numbers 
# A H L1 L2 M C. Where luck L is defined as L1/L2. Other numbers are, 
# as described above.
# Output
# Print probability that Kyoma kills Nomu in form P1/P2 where P1<=P2 
# and gcd(P1,P2)=1. If impossible, print “RIP” without quotes.

# Timeout
# 1

# Explanation

# Example 1
# Input
# 2
# 10 33 7 10 3 2
# 10 999 7 10 3 2
# Output
# 98/125
# RIP

from math import gcd, factorial, floor, ceil
from fractions import Fraction
import operator as op
from functools import reduce

def nCr(n, r):
    r = min(r, n-r)
    numer = reduce(op.mul, range(n, n-r, -1), 1)
    denom = reduce(op.mul, range(1, r+1), 1)
    return Fraction(numer,denom)

T = int(input().strip())
for _ in range(T):
  A, H, L1, L2, M, C = tuple(map(int,input().strip().split()))
  special_needed, L = ceil((H-M*A)/C), Fraction(L1,L2)

  count = Fraction(0)
  for k in range(special_needed,M+1):
    count += nCr(M,k)*L**k*(1-L)**(M-k)

  p1,p2 = count.numerator, count.denominator
  if p1==0:
    print('RIP')
  else:
    _ = gcd(p1,p2)
    print('{}/{}'.format(p1//_,p2//_))
