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: [-59.526, 55.871, 118.248, 197.073]

Answer: 77.916


Question: [99.278, 72.353, -21.292]

Answer: 50.113


Question: [56.202, 53.384, 121.133, -81.48, 215.568, 43.98]

Answer:
68.131