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: [190.624, 208.116, 244.123, 11.008, 131.095, -92.15, 109.658, 133.804, 50.323]

109.622