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:
[194.964, 80.506, -41.268, 32.912, -21.6, 21.543, 69.269]

Ex Output:
48.047


Ex Input:
[93.72, 13.366, -44.452, -29.011, 56.593, 5.272, -20.162, 160.282, 44.017]

Ex Output:
31.069


Ex Input:
[30.886, 164.514]

Ex Output:

97.7


