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: Let o be -12*-2*(-3)/(-24). What is the highest common factor of o and 33?

Output: 3


Input: Consider Input: Calculate prob of sequence az when two letters picked without replacement from {a: 2, z: 10}.

Output: 5/33


Input: Consider Input: Four letters picked without replacement from {k: 1, y: 1, p: 3, r: 7}. What is prob of sequence ppkp?


Output: 1/1980