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: [37.853, 78.283, 143.128, 82.561, 181.661, -89.154, 50.037]

Answer: 69.196


Question: [135.575, 134.352, 209.54, 199.614, 87.027, 215.933, 49.266, 167.288, 164.589]

Answer: 151.465


Question: [215.087, 73.727, 216.959, 186.669, 53.779, 177.474, 79.12, 237.295, 109.343]

Answer:
149.939