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]: [198.475, -38.691]
[EX A]: 79.892

[EX Q]: [103.885, 191.867, 82.228, 177.708, 136.093, -17.022]
[EX A]: 112.46

[EX Q]: [182.854, 113.394, 233.144, 170.266, 40.784, 114.721, -91.394, 108.149]
[EX A]:
108.99

