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: [128.152, 95.16, 70.113, -16.853]

Output: 69.143


Input: Consider Input: [-61.563, 49.659, 125.562, 130.542, 75.232, 197.442, 175.182, 54.736, 210.833, 65.27]

Output: 102.289


Input: Consider Input: [140.094, 93.078, 160.723, 10.177, -85.693, -26.587, 137.572, 232.482]


Output: 82.731