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]: [192.74, 78.623, -5.937, 144.535]
[EX A]: 102.49

[EX Q]: [73.331, 85.459, 59.798, -35.019]
[EX A]: 45.892

[EX Q]: [246.257, 43.753, 93.541]
[EX A]:
127.85