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

Ex Output:
-4.899


Ex Input:
[-92.0, 108.814, 164.207, 94.26, 33.74]

Ex Output:
61.804


Ex Input:
[-43.761, 63.747, 83.698]

Ex Output:

34.561