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:
Calculate prob of sequence az when two letters picked without replacement from {a: 2, z: 10}.

Ex Output:
5/33


Ex Input:
Suppose 3*j - 5*m = 41, 5*j + 0*j = 4*m + 77. Suppose -2*p - p - j = -5*x, -2*x - 3*p = 10. What is the units digit of (x + 0)*(3 - -8)?

Ex Output:
1


Ex Input:
-5 times 0.058

Ex Output:

-0.29