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]: [-6.099, 142.31]
[EX A]: 68.106

[EX Q]: [72.755, 233.932, 245.785, 92.401]
[EX A]: 161.218

[EX Q]: [137.665, 130.267, 21.383, -62.647, 27.478, 7.504, -85.626, 80.306]
[EX A]:
32.041