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]: [227.404, 94.456, 233.241, 147.762, -31.667, -62.22, -93.912]
[EX A]: 73.581

[EX Q]: [205.118, 101.679, 202.802, 144.052, -2.468, 239.04, -94.46, 214.193, 193.626]
[EX A]: 133.731

[EX Q]: [-61.011, -68.772, -17.305]
[EX A]:
-49.029