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: [-32.295, -15.78, 109.357, -15.374, -39.398, 237.91, 177.01, 97.164, 118.13]

70.747