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]: [231.057, 71.527, 201.799, -5.17, -14.963, -35.693]
[EX A]: 74.76

[EX Q]: [199.728, -96.25, -77.714]
[EX A]: 8.588

[EX Q]: [196.498, 127.82, 152.34, 243.226, 88.527, -34.724, 75.746, -26.137]
[EX A]:
102.912