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: [-17.141, 203.132, -6.872, 155.222, -99.642]

Answer: 46.94


Question: [-96.502, 12.006]

Answer: -42.248


Question: [-63.775, -92.198]

Answer:
-77.986