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]: [76.889, 179.836, 105.364]
[EX A]: 120.696

[EX Q]: [93.405, -31.061]
[EX A]: 31.172

[EX Q]: [8.149, 138.302]
[EX A]:
73.226