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: [159.381, -84.046]

Answer: 37.668


Question: [-40.246, -7.512, 174.245, -98.6]

Answer: 6.972


Question: [15.799, 89.814, 140.897, 53.358, 64.439, 80.492, 177.118, -74.065]

Answer:
68.482