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: [57.506, 172.357, 191.473, 131.849]

Answer: 138.296


Question: [84.13, 59.186, 115.606]

Answer: 86.307


Question: [93.5, -25.782]

Answer:
33.859