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: Let c be (5 + -4)/((-1)/3). What is the tens digit of c - (-6)/3 - -13?

A: 1
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Q: How many micrograms are there in one tenth of a milligram?

A: 100
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Q: What is prob of sequence daxw when four letters picked without replacement from {x: 3, p: 3, w: 1, h: 2, d: 3, a: 1}?

A:
3/5720
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