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: [209.13, -12.632, 247.489, 55.492, 8.967, -90.158, 193.743]

Answer: 87.433


Question: [171.439, 0.981, 42.253, 239.995, 129.938, -67.125, -69.565, -53.374, -51.357]

Answer: 38.132


Question: [61.761, 6.557, -93.386, -74.064, 33.4, 141.295]

Answer:
12.594