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: Let a(c) = -c**3 - 13*c**2 - 23*c - 5. Let s be a(-11). Calculate the highest common factor of s and 30.
Example Output: 6

Example Input: What is prob of picking 2 d when two letters picked without replacement from tqqqqqttdtqdqq?
Example Output: 1/91

Example Input: Suppose 0 = -3*i - i - 4. Let n(q) = -9*q**2 - q - 1. Let u be n(i). What is the lowest common multiple of 8 and (-6)/u*(33 + 0)?
Example Output:
88