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:
[9.392, -80.549]

Ex Output:
-35.579


Ex Input:
[203.498, -79.59, -73.767, -65.942, -8.693]

Ex Output:
-4.899


Ex Input:
[237.501, 67.08, 13.857]

Ex Output:

106.146


