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]: [-81.432, -63.059, 150.144, 55.203, 215.405, -89.797, 72.946]
[A]: 37.059

[Q]: [53.391, 118.782, 102.742]
[A]: 91.638

[Q]: [65.072, -91.462, 41.572, 79.904, -13.47, -37.044, 71.614]
[A]:
16.598