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: [-49.797, -85.057, 231.407, 29.347, 55.776, 2.207, 79.4, 224.768]

61.006