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: [128.916, 203.766]

Answer: 166.341


Question: [-11.211, 9.955, 208.942, 124.097, 118.282, 65.001]

Answer: 85.844


Question: [-17.45, -75.073, 169.663, 149.61]

Answer:
56.688