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: [135.807, 205.755, 191.805]

Answer: 177.789


Question: [10.724, -65.993, 107.56, 154.38, 117.135, 114.495, 11.544]

Answer: 64.264


Question: [188.797, -30.916]

Answer:
78.94