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]: [3.556, 65.177]
[EX A]: 34.366

[EX Q]: [147.664, 167.561, 244.106, -42.988, 9.425, 79.806, 239.58]
[EX A]: 120.736

[EX Q]: [-6.125, 53.865, 204.244, 221.628, 62.119]
[EX A]:
107.146