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: [219.91, 37.066, 195.992, 34.657, 201.665, 140.398, 95.128]

132.117