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: [143.709, 201.375, 175.193, 44.325, 32.313, 216.109, -96.501, 208.253, 183.53, 80.768]

118.907