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).

What is prob of sequence cw when two letters picked without replacement from rcrwwwrrsrsrrs?
3/182

How many grams are there in 0.1406962 tonnes?
140696.2

Suppose -4*s - n - 15 - 13 = 0, -5*s - n = 35. Let f be (s - -3) + 3 - -57. What is the greatest common divisor of f and 8?

8