Definition: 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.
Input: [32.867, 135.03, 16.501, 185.876, 51.026, 80.945, 104.725, -28.137, 101.092, -89.811]

59.011