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.

[48.462, -80.347, -19.649, 180.664, -24.117]
21.003

[188.006, 117.583, 51.262]
118.95

[10.631, 163.267, 136.722, 151.677, 121.448, 213.687, -18.511, -11.91, 232.959, 46.147]

104.612