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 next in -154, -164, -180, -202?

Ex Output:
-230


Ex Input:
Suppose 2*c = 4*c - 24. Calculate the remainder when c is divided by 7.

Ex Output:
5


Ex Input:
Suppose -7 - 3 = -k - 3*x, k - 2*x - 10 = 0. Let w be 8/20 - (-46)/k. Let r(m) = 5*m - 5. Let l be r(w). Calculate the greatest common divisor of 50 and l.

Ex Output:

10