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: [-77.226, 44.49]

Answer: -16.368


Question: [-57.334, 24.995, 72.22, -78.376, 218.297, 203.999, 21.93, -20.246, 15.97]

Answer: 44.606


Question: [6.311, 82.667, -21.764, -1.53, 223.997, 196.953, 189.246]

Answer:
96.554