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: [159.397, 45.088, -87.316, 115.267, 227.836, 31.542, 6.515, 159.921, 38.678, 244.63]

94.156