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).

Input: Consider Input: Four letters picked without replacement from aaaafaffaaafaa. What is prob of sequence fafa?

Output: 45/1001


Input: Consider Input: Let c = 4 - 2. Suppose 0 = n + c*n - u - 27, -3*n + 18 = 2*u. Suppose 3*p - n = 4. Solve 0 = 3*w - p - 2 for w.

Output: 2


Input: Consider Input: Let f(c) = -3*c - 5. Let t(u) = -3*u - 4. Let g(v) = -5*f(v) + 6*t(v). Let s be g(1). Let h = s + 8. Solve -m - h = -4*m for m.


Output: 2