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: [6.44, 231.265, -75.351, 113.021, 80.941, 204.842, 64.263, -52.189]

71.654