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: [-79.748, 98.398, 55.667, 77.39, -20.719, 187.168, 142.334, 110.723]

Answer: 71.402


Question: [-57.838, -63.616, 49.646, -45.262, 73.1, -82.399, 47.168]

Answer: -11.314


Question: [129.944, 231.59, 182.352, 59.487, 8.188, 205.296]

Answer:
136.143