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).

[EX Q]: What is the product of -4 and -42?
[EX A]: 168

[EX Q]: Calculate prob of sequence ee when two letters picked without replacement from {p: 5, e: 3}.
[EX A]: 3/28

[EX Q]: Let z(f) = -7*f**2 - 7*f + 9. Let c(k) = -6*k**2 - 7*k + 9. Let p(w) = 6*c(w) - 5*z(w). Let j be p(-8). Calculate the greatest common divisor of 8 and j.
[EX A]:
1