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:
Let y be (1 - -1)/(-1) + -25. What is the common denominator of 117/10 and (y/(-30))/((-9)/(-111))?

Ex Output:
10


Ex Input:
Let p(c) = 3*c - 13. Suppose -23 = -3*s + b, -2*s + 4*s - 2*b = 14. Calculate the smallest common multiple of p(s) and 5.

Ex Output:
55


Ex Input:
Calculate prob of sequence ikk when three letters picked without replacement from {i: 2, g: 1, b: 1, k: 2}.

Ex Output:

1/30