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]: [188.006, 117.583, 51.262]
[EX A]: 118.95

[EX Q]: [-61.905, -98.66, 90.472, 237.317, 5.243, 196.933]
[EX A]: 61.567

[EX Q]: [-43.637, -10.507]
[EX A]:
-27.072