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 prob of sequence ip when two letters picked without replacement from ipkkkppkiiiiiikkpk?
[EX A]: 14/153

[EX Q]: Convert 0.0206712 weeks to microseconds.
[EX A]: 12501941760

[EX Q]: Let s = -22 + 57. Let l = s + -22. Calculate the greatest common divisor of l and 65.
[EX A]:
13