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).

Example Input: How many kilometers are there in 2.673148 centimeters?
Example Output: 0.00002673148

Example Input: Let y(a) = -a + 5. Let m be y(3). Solve f + 16 = -0*f - 4*c, -3*c - 12 = -m*f for f.
Example Output: 0

Example Input: Evaluate (-4)/(24/30*5).
Example Output:
-1