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: [62.619, 71.045, -60.895, 50.744, 238.8, 113.238, -35.889, -83.217]

44.556