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]: [49.035, -81.115, 27.419]
[EX A]: -1.554

[EX Q]: [-44.977, 79.906, -20.036]
[EX A]: 4.964

[EX Q]: [5.644, -37.171, 22.684, -49.414, 214.87]
[EX A]:
31.323