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:
[152.683, 147.968, 62.877, -44.254, 4.344]

Ex Output:
64.724


Ex Input:
[-56.201, -77.67, -75.53, -51.92, 146.416, 141.525]

Ex Output:
4.437


Ex Input:
[157.792, -49.364, -85.505, -85.29, -26.457, 128.611]

Ex Output:

6.631