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: Convert 0.0206712 weeks to microseconds.

A: 12501941760
****
Q: Let n = -74 + 82. Calculate the remainder when n is divided by 2 - (2/2 + -2).

A: 2
****
Q: How many nanograms are there in 2155.172 kilograms?

A:
2155172000000000
****