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]: [206.606, -76.103, -16.863, 44.126, 4.019, 15.088]
[EX A]: 29.479

[EX Q]: [-20.155, -42.404]
[EX A]: -31.28

[EX Q]: [-81.785, -44.121]
[EX A]:
-62.953