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: [143.08, -95.41, 80.605, 177.631, 10.024, -83.45, 107.148, 47.507, 115.672, 100.06]

60.287