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: Let a be 2/(3 + (-26)/10). Let x be ((-6)/a)/(6/(-320)). What is the units digit of x/6 - 3/(-9)?

Answer: 1


Question: Suppose -3*x - 2*x = 0. Suppose 0 = -2*j + 3*v - 8, 2*j - 2*v + 4 = -x*v. What is the units digit of j?

Answer: 2


Question: Multiply -72.13 and 2.

Answer:
-144.26