TASK DEFINITION: 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).
PROBLEM: Four letters picked without replacement from ppppbbuppbhxpbb. What is prob of sequence hbxp?

SOLUTION: 1/936

PROBLEM: Solve -189 = -7*k - 133 for k.

SOLUTION: 8

PROBLEM: Suppose -j - 4*j - 24 = -3*g, -4*g - 4*j + 64 = 0. Suppose 0 = 5*z + g - 38. Solve 8 = i - 5*s, -z*i + 2*i = -2*s - 11 for i.

SOLUTION:
3