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: [161.659, 2.073, 59.036, 22.298, 154.516, 68.136, 173.758, 153.41, 143.713, 176.345]

111.494