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 Input:
What is 15/4 of a millisecond in microseconds?

Ex Output:
3750


Ex Input:
Suppose 2*y + 12 = 6*y. Suppose y = f - 15. Solve -8 = -4*w, -3*d - 4*w + f = -8*d for d.

Ex Output:
-2


Ex Input:
Let m(h) = h**2 + h - 4. Let c be m(-3). Let r(b) = -b**2 + 0 - b**c - b + 7*b**2 + 6. Let y be r(5). What is the highest common divisor of 14 and y?

Ex Output:

14