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: [82.748, 43.804, -13.469, 226.705, -7.478]

Answer: 66.462


Question: [93.72, 13.366, -44.452, -29.011, 56.593, 5.272, -20.162, 160.282, 44.017]

Answer: 31.069


Question: [129.874, 136.761, 11.242, 192.595, 216.126]

Answer:
137.32