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: [15.293, 221.056, 241.387, 81.3, 102.644, 146.885, -33.65, -36.56, -69.176]

Answer: 74.353


Question: [-31.241, 73.981, 127.71, 166.275, 35.028, -10.432]

Answer: 60.22


Question: [45.676, 108.309, 164.871]

Answer:
106.285