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: [46.584, 183.883, -76.45, 153.976, 150.492, -32.622, 109.444, 15.83, 161.236]

79.153