instruction:
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:
Three letters picked without replacement from aanoaooonoaoa. What is prob of sequence nna?
answer:
5/858


question:
What is 49067.84ng in micrograms?
answer:
49.06784


question:
Suppose -2*x - 5*b + 99 = 0, x + b - 4*b = 44. What is the highest common factor of 188 and x?
answer:

47