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.

[EX Q]: [-30.66, 134.777, 39.637, -41.053, 60.502, -99.875, -32.055, 51.52, 216.645, 11.994]
[EX A]: 31.143

[EX Q]: [-72.554, 9.809, 27.09, 190.698]
[EX A]: 38.761

[EX Q]: [-47.555, 166.208, 196.763, 138.223, -46.007, 221.61, 141.334]
[EX A]:
110.082