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: [-79.037, -76.421, 49.322, -41.773, 140.857, 150.669, 240.753, 8.294, -92.965]

33.3