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:
[102.553, 221.594, -69.406, 192.534, 139.703, -38.208, 228.963, 32.921]

Ex Output:
101.332


Ex Input:
[183.332, -51.581, -15.684, 140.965, 37.376, 37.734, 71.356]

Ex Output:
57.643


Ex Input:
[-90.119, -29.624, 162.765, 246.069, 150.043, 163.064, -89.514, 69.026, 249.461]

Ex Output:

92.352