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:
[-89.59, -15.783, 35.306, 46.851, 97.275, 19.027, 200.372, 62.551]

Ex Output:
44.501


Ex Input:
[103.885, 191.867, 82.228, 177.708, 136.093, -17.022]

Ex Output:
112.46


Ex Input:
[213.2, 159.287, 214.859, 189.464, 185.706, -85.847, 215.647, 8.545]

Ex Output:

137.608