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).

Example 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?
Example Output: 1

Example Input: What is the least common multiple of 40 and 2 - (-52)/(-28) - 209/(-7)?
Example Output: 120

Example Input: Let q(v) = v**3 + 6*v**2 + 3*v + 5. Let r be q(-5). Suppose 0 = -i + 10 - 0. Calculate the highest common divisor of i and r.
Example Output:
5