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 the tenth root of 6568 to the nearest integer?

Ex Output:
2


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

Ex Output:
120


Ex Input:
Let i(n) = n**3 - 8*n**2 + 7*n - 1. Let b be i(7). What is the units digit of -1 - (2 - -8)*b?

Ex Output:

9