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).

[Q]: How many decades are there in 8/25 of a millennium?
[A]: 32


[Q]: What is the product of -4 and -42?
[A]: 168


[Q]: Let n(r) = 3*r + 1 - 2*r + 4 - 4 - r**3. Let i(m) = m**3 - 2*m**2 + 2*m + 1. Let t(x) = i(x) - n(x). What is the remainder when 18 is divided by t(2)?
[A]:
8