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: [-38.063, -41.033, 67.932, 201.401, 159.948, 119.631, 73.635, -96.282, 85.486]

59.184