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]: [37.853, 78.283, 143.128, 82.561, 181.661, -89.154, 50.037]
[EX A]: 69.196

[EX Q]: [121.069, 12.661, 159.825, -39.645, 6.609, 156.735, 110.054, 112.875]
[EX A]: 80.023

[EX Q]: [195.56, 198.265, -13.16, -96.96]
[EX A]:
70.926