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]: [128.152, 95.16, 70.113, -16.853]
[EX A]: 69.143

[EX Q]: [11.642, -39.595, 23.351, 168.447, 244.85, 108.958, 80.422, -14.774, 138.977]
[EX A]: 80.253

[EX Q]: [-71.745, -18.239, 214.837, -22.915, 180.841, -4.641]
[EX A]:
46.356