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]: [75.879, 43.123]
[EX A]: 59.501

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

[EX Q]: [220.219, 123.13, -71.698, 165.801, -14.674, 150.68, 13.431]
[EX A]:
83.841