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]: [54.908, 25.798]
[EX A]: 40.353

[EX Q]: [217.523, 92.701, -55.65, -89.359, 55.742, 158.634, -31.883, 206.554]
[EX A]: 69.283

[EX Q]: [-85.854, -70.228, 183.227, 66.622, 93.728, 56.008]
[EX A]:
40.584