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: [141.597, -13.558, -15.987, -52.44, 77.914]

Answer: 27.505


Question: [-51.603, 117.351, -67.451, 218.664, 68.981, 167.005, -53.851, 104.996]

Answer: 63.012


Question: [128.899, -15.862, 152.639, 183.098, 75.752, 54.786, 159.782, 116.084, -36.669]

Answer:
90.945