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:
[169.131, -79.809, 119.898, 174.146, -1.167, 89.734, 155.318, -26.905, 182.476, 164.085]

Ex Output:
94.691


Ex Input:
[22.971, 146.947, 84.327, 123.65, -30.682, -43.973, 211.836, 146.398, -65.992]

Ex Output:
66.165


Ex Input:
[-99.569, -1.338, 191.574, 164.294, 208.852, 242.061]

Ex Output:

117.646