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: [80.806, 35.876, 158.546, 92.022, 94.527, 35.887, 208.459]

100.875