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: [18.155, 114.069, 197.871, -99.696, 201.18]

Answer: 86.316


Question: [139.608, 17.516, 100.5, -51.362, 57.462, -77.569, -95.41, -24.339, -96.579]

Answer: -3.353


Question: [17.29, 6.639, 140.595, 18.134, 51.788, 30.284, -39.61, 241.772, 10.653]

Answer:
53.061