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]: [13.21, 76.551, 51.016, 230.763, 149.792, 157.216, 117.414, 144.272, 5.805, 118.165]
[EX A]: 106.42

[EX Q]: [100.422, 199.731, 138.971, 95.515, 9.517]
[EX A]: 108.831

[EX Q]: [107.17, -73.13, -63.072, -44.994, -99.673, -58.318, 143.699, -65.772]
[EX A]:
-19.261