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: [223.847, 115.483, 148.407, -44.824, 99.251, 36.833, -45.949]

Answer: 76.15


Question: [74.43, 138.738, 114.237, 138.845, 188.957, 103.103, -43.988, -68.085, 157.274]

Answer: 89.279


Question: [228.507, 41.014, 196.995, 90.646]

Answer:
139.29