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: [146.748, -23.736, 49.614]

Answer: 57.542


Question: [17.197, 152.985, 73.815]

Answer: 81.332


Question: [119.324, 147.556, 78.047, 228.233, 243.763, -40.27, 138.747, 130.379]

Answer:
130.722