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.

[Q]: [215.854, -43.532, 51.416]
[A]: 74.579


[Q]: [80.113, -28.006, -40.254, 222.454, 29.784, 129.871, 141.71, -44.716, -22.74]
[A]: 52.024


[Q]: [212.771, 126.675, -39.096, 238.243, 27.305]
[A]:
113.18