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]: [185.594, 89.215, 19.941, 23.299, 47.251]
[EX A]: 73.06

[EX Q]: [9.392, -80.549]
[EX A]: -35.579

[EX Q]: [-35.762, 139.096, -42.495, 212.873, 171.092, 51.289, -17.019]
[EX A]:
68.439