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).
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Question: Suppose 4*n + 20 = -0*n. Let j = -5 - n. Let m be (60/4)/(1 - j). Calculate the highest common divisor of 15 and m.

Answer: 15


Question: Let f(h) = h**2 - 5*h + 6. Let l be 6 - (-1 - (-5 - -2)). What is the units digit of f(l)?

Answer: 2


Question: Let h = -20 + 24. Let g be ((-12)/15)/(h/(-50)). Calculate the greatest common divisor of g and 5.

Answer:
5