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:
[62.65, 155.504, 55.659, 77.757]

Ex Output:
87.892


Ex Input:
[-31.241, 73.981, 127.71, 166.275, 35.028, -10.432]

Ex Output:
60.22


Ex Input:
[114.555, 70.394]

Ex Output:

92.474