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]: [64.523, 131.207, -30.223, -95.659]
[EX A]: 17.462

[EX Q]: [110.671, -22.006, 168.421, 152.718, 116.702, -26.669, -55.023, -72.932]
[EX A]: 46.485

[EX Q]: [155.039, 103.423, -32.087, 77.721]
[EX A]:
76.024