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]: [172.084, 126.948, 90.757]
[A]: 129.93


[Q]: [-69.698, 181.415, -43.045, 160.857]
[A]: 57.382


[Q]: [179.999, 155.835, 137.7, -29.644, 249.965, 151.69, 211.584]
[A]:
151.018