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]: [152.683, 147.968, 62.877, -44.254, 4.344]
[EX A]: 64.724

[EX Q]: [-45.201, 161.25, -67.093, 105.259, 110.499, 224.516, -55.166, 11.51]
[EX A]: 55.697

[EX Q]: [134.202, 124.439, -12.212, 205.224]
[EX A]:
112.913