Given a simple high-school level math question, you are required to solve it and provide the final answer. The final answer is always a single number. These questions can range from a variety of topics like simple arithmetic, solving equations, converting a quantity from one unit to another, finding remainders/GCD/LCM, finding probabilities etc. Each question has only one correct answer. This answer can be a positive or negative integer, a fraction or a decimal number. If the answer is a negative number use the hyphen (e.g. -42) symbol for the minus sign. For decimal numbers, do not add extra zeros after the decimal point. For fractional numbers, separate the numerator and denominator using a forward slash (e.g. 3/25).

Ex Input:
Calculate prob of picking 2 n and 2 o when four letters picked without replacement from {o: 17, n: 3}.

Ex Output:
8/95


Ex Input:
Suppose -27 = g - 70. What is the units digit of g?

Ex Output:
3


Ex Input:
Two letters picked without replacement from {m: 5, y: 5, x: 5, i: 1}. What is prob of picking 1 i and 1 y?

Ex Output:

1/24