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]: [89.226, 241.396, 7.011, 114.867, 113.075, 103.559, 83.142, 188.743, -27.33, 180.773]
[EX A]: 109.446

[EX Q]: [5.703, -17.365, 21.827, 38.836, 5.17, -15.533]
[EX A]: 6.44

[EX Q]: [-7.892, -43.609, 46.236, -78.213, -76.066]
[EX A]:
-31.909

