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]: [-31.241, 73.981, 127.71, 166.275, 35.028, -10.432]
[EX A]: 60.22

[EX Q]: [196.683, 97.538, 247.799, 203.036, 203.369, -15.737]
[EX A]: 155.448

[EX Q]: [190.63, 111.59, 116.688, -37.764, 230.151, 149.484]
[EX A]:
126.797