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: [-95.008, -68.249, -17.225, 6.412, -32.397, 20.924, 27.795]

-22.535