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]: [183.332, -51.581, -15.684, 140.965, 37.376, 37.734, 71.356]
[EX A]: 57.643

[EX Q]: [-96.229, 200.453]
[EX A]: 52.112

[EX Q]: [105.274, -66.492, 118.244, 114.355, -14.847, -3.061, 221.289, 42.404, -7.31]
[EX A]:
56.651