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: [-57.334, 24.995, 72.22, -78.376, 218.297, 203.999, 21.93, -20.246, 15.97]

Answer: 44.606


Question: [148.261, -51.308, -98.748, -41.832, 44.313, -41.042, -19.943]

Answer: -8.614


Question: [-45.494, 241.706, 175.237, 198.516, 80.373]

Answer:
130.068