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).
--------
Question: What is thirteen quarters of a litre in millilitres?

Answer: 3250


Question: What is 20133.759ms in minutes?

Answer: 0.33556265


Question: Suppose 4*d + q - 9 = 2*d, 5*q - 5 = -2*d. Calculate the greatest common factor of d and 65.

Answer:
5