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:
[41.081, 166.314, -14.556, -84.648, -8.286]

Ex Output:
19.981


Ex Input:
[-96.502, 12.006]

Ex Output:
-42.248


Ex Input:
[223.512, 141.577, 132.838, 42.442, -82.101, 100.269, 222.062, 149.605]

Ex Output:

116.276