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: [-81.562, -32.863, 168.227, -15.961, 5.955, 195.609, 222.458, 65.602, -27.724, -85.043]

41.47