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:
Solve -2*b + 28 = -5*q, -b - q + 4 = b for b.

Ex Output:
4


Ex Input:
What is prob of picking 2 v and 1 x when three letters picked without replacement from xmxvxmvvmmxmvx?

Ex Output:
15/182


Ex Input:
What is 8/25 of a millennium in months?

Ex Output:

3840