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: [-84.527, 79.802, 199.903, 26.161, 115.518, 32.556, 97.527, 249.729, 127.751, 102.687]

94.711