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: [38.946, 240.592, 26.691, -5.444, -13.63, -62.499, -72.937, 24.035, 198.963, 70.323]

44.504