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]: [169.737, 56.872, 102.557, -9.77]
[EX A]: 79.849

[EX Q]: [-78.906, 119.863, 44.561, 1.523]
[EX A]: 21.76

[EX Q]: [193.711, 110.309, -20.334, 151.607, 158.797, -97.825, -59.931]
[EX A]:
62.333