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: [-67.154, 33.622, 180.112, 149.655, 37.878, 101.921, 183.35, 24.104]

80.436