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: [184.843, 120.88, -43.605, 34.499, 238.006, 59.091, 32.324, 76.395, 62.601]

85.004