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]: Four letters picked without replacement from wkakwuuwuuukwwuuwuu. Give prob of picking 3 w and 1 a.
[EX A]: 5/969

[EX Q]: Solve -3*w - 4 = -h - 8*w, 4*h = -2*w - 2 for h.
[EX A]: -1

[EX Q]: Calculate prob of picking 1 f, 1 l, and 1 n when three letters picked without replacement from {g: 1, i: 1, e: 5, l: 3, n: 2, f: 1}.
[EX A]:
3/143