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:
[194.983, -22.961, 95.798, -2.34, 178.547, -90.942, 122.52, 109.389]

Ex Output:
73.124


Ex Input:
[112.53, -67.079, 177.313, 230.482, 57.316, -37.564]

Ex Output:
78.833


Ex Input:
[70.553, 193.054, 166.173, 115.812]

Ex Output:

136.398