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.

[-75.664, 192.225, 2.107, -86.22, -51.11]
-3.732

[211.927, 190.941, -74.44, 7.991, -80.894, 48.291, 127.383, -51.774]
47.428

[84.556, -81.758, 40.949, 123.938, 210.939, 184.029, 214.385]

111.005