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]: [-56.201, -77.67, -75.53, -51.92, 146.416, 141.525]
[EX A]: 4.437

[EX Q]: [64.523, 131.207, -30.223, -95.659]
[EX A]: 17.462

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