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 Input:
Four letters picked without replacement from ppppbbuppbhxpbb. What is prob of sequence hbxp?

Ex Output:
1/936


Ex Input:
What is 20133.759ms in minutes?

Ex Output:
0.33556265


Ex Input:
Let y(l) = -15*l + 5. Let x be y(-16). Suppose 0 = 5*i + 10 - x. What is the units digit of i?

Ex Output:

7