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:
[-67.542, 65.934, 223.305, 25.694, 159.037]

Ex Output:
81.286


Ex Input:
[16.256, 155.71, 43.059, -64.109, -42.445, 78.725, -12.941, 47.497]

Ex Output:
27.719


Ex Input:
[-2.956, -44.811, 131.525, 205.987, 29.985, -59.025, 36.716, 111.992, -51.924, 112.036]

Ex Output:

46.952