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]: [-7.775, 55.997, 216.046]
[A]: 88.089


[Q]: [43.554, 122.733, 40.669, 163.641]
[A]: 92.649


[Q]: [216.16, 58.77, -76.559, 200.065, 187.809, 69.246, 77.895, 200.934, 230.834]
[A]:
129.462