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:
Let x(i) = i**3 + 5*i**2 - 6*i + 2. Let m be x(-6). Suppose 0 = -m*d + d + 13. What is the tens digit of d?

Ex Output:
1


Ex Input:
-774 divided by -3

Ex Output:
258


Ex Input:
Let a(y) = -y**3 + 5*y**2 - 5*y + 5. Let f be a(4). Suppose l - b + f = 10, 4*l - 32 = 3*b. Solve -2*d - 4*o - 4 = 0, -3*o = l*d - 1 - 10 for d.

Ex Output:

4