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: [136.816, 121.886, 38.032, 81.322, -0.781, 112.95, 49.478, 219.21, -42.397]

Answer: 79.613


Question: [61.739, -99.854, -53.677]

Answer: -30.597


Question: [-5.696, 66.229, -87.844, 158.917, -53.637, 98.651]

Answer:
29.437