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: [87.258, 29.558, -48.199, -28.615, 46.642]

Answer: 17.329


Question: [128.152, 95.16, 70.113, -16.853]

Answer: 69.143


Question: [18.155, 114.069, 197.871, -99.696, 201.18]

Answer:
86.316