In this task you will be given a list of numbers and you need to find the mean (average) of that list. The mean of a list can be found by summing every number in the list then dividing the result by the size of that list. The output should be rounded to 3 decimal places.
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Question: [16.256, 155.71, 43.059, -64.109, -42.445, 78.725, -12.941, 47.497]

Answer: 27.719


Question: [172.084, 126.948, 90.757]

Answer: 129.93


Question: [189.969, 141.874, -63.201, -22.618, 183.145, -36.312, 55.276, 125.444, -89.031]

Answer:
53.838