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]: [234.272, 196.413, -92.425]
[EX A]: 112.753

[EX Q]: [-78.906, 119.863, 44.561, 1.523]
[EX A]: 21.76

[EX Q]: [141.168, 29.09, 4.391, 214.622, 125.493, 21.955, 26.26, -80.499, 14.059, 130.952]
[EX A]:
62.749