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: [38.343, 177.478, 120.174, -74.923, 98.159]

Answer: 71.846


Question: [108.822, 139.139, 130.938, 100.996, 155.361, 8.752, 221.639, -12.877]

Answer: 106.596


Question: [227.906, 51.753, 136.102, 34.354, 19.172, -14.273, 181.635, 239.243, 126.67]

Answer:
111.396