In this given problem, which given a positive integer M can generate any real
number between 0 to N, and Probability density function is uniform in [0, M].

GIven two numbers X and Y, you need to genrate a ,b using random number generator with uniform Probability density function in [ 0,X ] and [ 0,Y ] , such that a+b is less than equal to C ( C is a positive Integer).

INPUT

The first line of the input is an integer N the number of test cases.

N lines follow. Each line contains 3 positive integers X, Y and C.

OUTPUT

For each Input, Output a fraction that indicates the probability. The GCD of each pair of numerator and denominator should be 1.

CONSTRAINTS

1 < N,X,Y,C < 10000

SAMPLE INPUT
3
1 1 1
1 1 2
1 1 3

SAMPLE OUTPUT
1/2
1/1
1/1

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