instruction:
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).
question:
560/(-320) - (2*-2 + 2)
answer:
1/4


question:
What is prob of picking 1 c and 1 b when two letters picked without replacement from bbbbbbbbbbbbbbccbb?
answer:
32/153


question:
What is prob of sequence uy when two letters picked without replacement from uukgguvuyukyvkyuyc?
answer:

4/51