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

[EX Q]: [218.946, 137.641, 232.578, 134.51, 112.958, -13.427, 249.648, 64.585, 180.405]
[EX A]:
146.427