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]: [54.908, 25.798]
[EX A]: 40.353

[EX Q]: [-51.603, 117.351, -67.451, 218.664, 68.981, 167.005, -53.851, 104.996]
[EX A]: 63.012

[EX Q]: [162.908, -23.953, 124.76, 64.152]
[EX A]:
81.967