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: [-49.117, 50.022, 238.053, 248.438, -41.867, 33.921, 80.366, 116.72, -7.03, 62.247]

73.175