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]: [213.149, 184.894, -93.544, 195.043, 78.738, 229.09, 220.609, 80.079, 7.498]
[EX A]: 123.951

[EX Q]: [127.522, 232.86, 46.593]
[EX A]: 135.658

[EX Q]: [-76.355, 182.337, -7.566, 130.962, 170.278, 132.067, 194.871, 59.557, -59.749, -8.469]
[EX A]:
71.793