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]: [82.748, 43.804, -13.469, 226.705, -7.478]
[EX A]: 66.462

[EX Q]: [213.2, 159.287, 214.859, 189.464, 185.706, -85.847, 215.647, 8.545]
[EX A]: 137.608

[EX Q]: [230.233, 245.79, 230.167, 170.192, 150.066, 178.333, 13.521, 51.188]
[EX A]:
158.686