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]: What is 15/4 of a millisecond in microseconds?
[A]: 3750


[Q]: What comes next: 354, 1412, 3176, 5646, 8822, 12704?
[A]: 17292


[Q]: Let u(d) = 5*d - 3. Calculate the remainder when 85 is divided by u(5).
[A]:
19