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: [-10.287, -0.47, 195.152, 209.845, -64.645, -82.959, 106.327]

Answer: 50.423


Question: [-7.892, -43.609, 46.236, -78.213, -76.066]

Answer: -31.909


Question: [-25.548, 60.76, -71.291, 28.584, -42.004]

Answer:
-9.9