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: [14.759, 72.833, -16.152, 36.847, -19.054, 182.911, -83.998, -7.533, -50.458]

14.462