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]: [91.408, 178.508, 77.081, 13.419, 185.372, 158.828]
[EX A]: 117.436

[EX Q]: [-53.388, 31.309, 19.079, -16.926, 242.421, 210.599]
[EX A]: 72.182

[EX Q]: [53.689, 92.915, 11.009, 30.726, -0.459, -32.267, 104.621]
[EX A]:
37.176