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]: [-1.31, 169.522, -26.172, 111.289]
[EX A]: 63.332

[EX Q]: [128.472, 149.361, 71.023, -96.651]
[EX A]: 63.051

[EX Q]: [230.673, -25.014, 81.741, 83.984, 15.031, -2.618, 10.709]
[EX A]:
56.358