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]: [188.006, 117.583, 51.262]
[EX A]: 118.95

[EX Q]: [1.222, 33.339, 163.969]
[EX A]: 66.177

[EX Q]: [-72.363, 92.796, 135.977, 216.226, 166.191, 57.433]
[EX A]:
99.377