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: [-44.783, 93.688, 86.748, -66.361, 67.305, 67.248, 176.892, 67.989, 5.83]

50.506