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: [220.903, 155.959]

Answer: 188.431


Question: [-6.992, -36.177, -95.203, 87.142]

Answer: -12.808


Question: [127.245, 216.32, 240.025, 219.568, -77.603, 104.055, 197.515, 165.861, 191.504, 24.445]

Answer:
140.893