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: [108.822, 139.139, 130.938, 100.996, 155.361, 8.752, 221.639, -12.877]

Output: 106.596


Input: Consider Input: [21.659, 63.646, -97.361]

Output: -4.019


Input: Consider Input: [160.786, 206.749, 21.159, -10.871, 51.251, 29.783]


Output: 76.476