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: Calculate prob of sequence ppy when three letters picked without replacement from {y: 2, p: 2}.

Output: 1/6


Input: Consider Input: How many decades are there in 8/25 of a millennium?

Output: 32


Input: Consider Input: Let d = 15 - 13. Let x be (-2)/(-4) - (-5)/2. Suppose -d*s + x = -9. What is the highest common divisor of 36 and s?


Output: 6