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]: [-51.625, 100.25, -75.262, -53.896]
[A]: -20.133


[Q]: [58.271, 233.766, -9.758, -40.349, 145.507, 90.294, 186.999]
[A]: 94.961


[Q]: [-31.323, 30.378, 122.524, -38.765, 49.153]
[A]:
26.393