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).

Input: Consider Input: Four letters picked without replacement from {m: 5, z: 1, b: 8, h: 4}. Give prob of picking 1 b, 1 z, 1 h, and 1 m.

Output: 8/153


Input: Consider Input: How many months are there in eight thirds of a year?

Output: 32


Input: Consider Input: Solve -w - 5*c - 13 = 8, 4*w + 5*c = -9 for w.


Output: 4