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 picking 2 f when two letters picked without replacement from iiiiffll?
[EX A]: 1/28

[EX Q]: What comes next: 19, 16, 25, 58, 127?
[EX A]: 244

[EX Q]: Let j(q) = 1. Let x(l) = 4*l - 2. Let t(u) = -3*j(u) - x(u). Let w be t(-1). Let z be w/(1 + (-75)/84). Calculate the greatest common divisor of z and 42.
[EX A]:
14