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:
[89.776, -37.895, -45.315, 75.805, 144.052, 150.156]

Ex Output:
62.763


Ex Input:
[-96.229, 200.453]

Ex Output:
52.112


Ex Input:
[-54.086, 36.013, 103.837, 115.807, 94.889, -45.835, -14.174]

Ex Output:

33.779