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: [37.259, 208.225, 95.819, 205.221, 164.82, 101.837, -95.921, 112.447]

103.713