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: [248.385, -40.468, -97.132]

Answer: 36.928


Question: [213.2, 159.287, 214.859, 189.464, 185.706, -85.847, 215.647, 8.545]

Answer: 137.608


Question: [-64.822, 73.832, 12.429, 21.749, 184.434, 98.367, 241.998, 67.573, 115.104]

Answer:
83.407