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]: [49.462, -87.869, 36.985, 94.248, 175.789]
[EX A]: 53.723

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

[EX Q]: [133.885, 153.911, 226.516]
[EX A]:
171.437