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]: [178.031, -52.967, 31.914, 174.681, 155.375, -3.831, 165.333, 10.246, -14.468]
[EX A]: 71.59

[EX Q]: [97.816, -78.424]
[EX A]: 9.696

[EX Q]: [188.006, 117.583, 51.262]
[EX A]:
118.95