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]: [-79.748, 98.398, 55.667, 77.39, -20.719, 187.168, 142.334, 110.723]
[EX A]: 71.402

[EX Q]: [-42.207, -46.667, 171.095]
[EX A]: 27.407

[EX Q]: [18.334, 187.117, -55.156]
[EX A]:
50.098