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:
How many grams are there in 0.1406962 tonnes?

Ex Output:
140696.2


Ex Input:
-4*80.8

Ex Output:
-323.2


Ex Input:
Solve 29 = 5*c - 3*k, -9 = -4*c + 4*k + 19 for c.

Ex Output:

4