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: [-63.278, 115.92, 179.699, 73.157]

Answer: 76.374


Question: [-67.542, 65.934, 223.305, 25.694, 159.037]

Answer: 81.286


Question: [235.483, -99.216, -13.978, 222.961, 225.497, 207.858]

Answer:
129.768