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:
Suppose 0 = -5*d + 17 + 3. Let i(m) = m - 4. Let k be i(d). Suppose 5*w - 3*j = 14, 5*j - 2 = 2*w - k*w. Solve -w = -2*l + l for l.

Ex Output:
4


Ex Input:
Let h be (-78)/(-24) + (-3)/12. Suppose h*z - 42 = -z + 2*f, z = f + 8. What is the remainder when 24 is divided by z?

Ex Output:
11


Ex Input:
Suppose -9 - 3 = 3*t. Let h = t - -11. What is the units digit of h?

Ex Output:

7