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: [194.082, -99.824, 124.507, -35.233, 165.552, 16.149, 212.049]

82.469