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: [-81.432, -63.059, 150.144, 55.203, 215.405, -89.797, 72.946]

Answer: 37.059


Question: [199.728, -96.25, -77.714]

Answer: 8.588


Question: [139.304, -83.145, 163.642, 43.653, 68.259, 229.97, 25.046, 121.49, 198.512, 39.247]

Answer:
94.598