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: [-92.234, -56.257, -84.266, 243.403, 164.164, 101.559, -36.511, -62.576, -44.091]

14.799