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.

[EX Q]: [85.011, -20.439, 195.195, 114.286]
[EX A]: 93.513

[EX Q]: [100.422, 199.731, 138.971, 95.515, 9.517]
[EX A]: 108.831

[EX Q]: [139.608, 17.516, 100.5, -51.362, 57.462, -77.569, -95.41, -24.339, -96.579]
[EX A]:
-3.353