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 Q]: How many meters are there in fourty-three halves of a kilometer?
[EX A]: 21500

[EX Q]: In base 14, what is -5 - 1163?
[EX A]: -1168

[EX Q]: How many milligrams are there in 2851.22 tonnes?
[EX A]:
2851220000000