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

Answer: -12.808


Question: [-92.167, -67.984, -31.831, -21.057, 101.792, 114.116, 185.901, -25.874]

Answer: 20.362


Question: [219.497, 235.01, 215.02, 234.454, 139.127, 236.36, -40.693]

Answer:
176.968