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]: [128.328, 20.497, 96.178, 237.663, 80.568, 109.722]
[EX A]: 112.159

[EX Q]: [80.113, -28.006, -40.254, 222.454, 29.784, 129.871, 141.71, -44.716, -22.74]
[EX A]: 52.024

[EX Q]: [34.999, -78.799, 65.027, 240.998, -11.399]
[EX A]:
50.165