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

[EX Q]: [-19.769, 147.929, -36.133, 201.287, 28.528, -6.089, 122.533, 127.892, -36.662]
[EX A]: 58.835

[EX Q]: [-25.443, 215.498, 191.151, 161.076, -55.186, 90.885]
[EX A]:
96.33