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).

Example Input: How many meters are there in 25/8 of a kilometer?
Example Output: 3125

Example Input: What is prob of sequence ggg when three letters picked without replacement from ccccggcgcgccccgcgcc?
Example Output: 20/969

Example Input: Suppose -4*c - 31 = 17. Let u = 17 + c. What is the remainder when 13 is divided by u?
Example Output:
3