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]: [-24.857, -28.799, 240.99]
[EX A]: 62.445

[EX Q]: [178.031, -52.967, 31.914, 174.681, 155.375, -3.831, 165.333, 10.246, -14.468]
[EX A]: 71.59

[EX Q]: [-0.94, 84.933, 210.958, -7.889, 229.121, 163.704]
[EX A]:
113.314