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: Consider Input: [-44.977, 79.906, -20.036]

Output: 4.964


Input: Consider Input: [159.965, 172.082]

Output: 166.024


Input: Consider Input: [112.875, 125.128, -76.961, 16.452]


Output: 44.373