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]: [-20.702, 4.455, 37.838, 102.751, 231.6, -23.075, 236.527, 227.109, 171.708, 46.239]
[EX A]: 101.445

[EX Q]: [47.595, -7.171, 4.333, 160.025, 152.275, 90.23, 128.643, 145.181]
[EX A]: 90.139

[EX Q]: [56.983, 243.287, -89.286, 218.223]
[EX A]:
107.302