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]: [-90.211, -60.08, 99.87, 18.704, 197.269, 173.722, 168.875]
[EX A]: 72.593

[EX Q]: [-17.026, 165.89]
[EX A]: 74.432

[EX Q]: [83.108, 66.439, 237.722, 178.982, 125.938, 40.008, 32.364]
[EX A]:
109.223