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: [242.148, 97.472, -15.031, 246.784, 54.233, -27.114]

Answer: 99.749


Question: [-3.302, 23.685, 69.661, 74.979, -46.96]

Answer: 23.613


Question: [221.561, 205.249, -5.164]

Answer:
140.549