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]: [-2.772, 225.483, 211.749, 45.779, -82.623, 229.799, 107.783, 64.653]
[EX A]: 99.981

[EX Q]: [166.967, 154.381, -19.741, 157.124]
[EX A]: 114.683

[EX Q]: [53.126, 235.803, 214.379, -13.572, 204.492, 157.953, -86.192, 62.323, 100.931]
[EX A]:
103.249