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]: [1.222, 33.339, 163.969]
[EX A]: 66.177

[EX Q]: [206.606, -76.103, -16.863, 44.126, 4.019, 15.088]
[EX A]: 29.479

[EX Q]: [235.564, 119.951, 125.403, 4.13, 181.236, 68.992, 243.447, -38.958]
[EX A]:
117.471