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]: [146.748, -23.736, 49.614]
[EX A]: 57.542

[EX Q]: [82.992, 235.629, -36.094, -43.326, 27.531, -12.091, 212.495, 34.388]
[EX A]: 62.69

[EX Q]: [228.567, 129.227, -43.675, 239.739, 45.633, 21.59, 203.835]
[EX A]:
117.845