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.

[-24.857, -28.799, 240.99]
62.445

[165.647, 110.893, -83.152, -56.699, 19.53, 48.825, -64.043, 199.192, 249.46, 244.789]
83.444

[158.533, -82.667, 23.144, 225.234, 223.218, 36.676, -75.088, 211.084]

90.017