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: [27.217, 183.886, -79.07, -22.32, 10.706, 111.448, 163.842, 133.608, 87.286, 49.082]

66.568