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 Input:
[-74.139, -62.711, 83.1, 211.243, -2.696, 30.722, 79.262, 230.335]

Ex Output:
61.89


Ex Input:
[160.713, 125.985, 186.982, -94.178, 183.77]

Ex Output:
112.654


Ex Input:
[-49.197, 65.474, 84.269, 124.478, -94.567, -95.917, 226.369, -64.419]

Ex Output:

24.561