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: [-38.715, 205.647, 66.034, 49.8, -92.051, 111.017, 149.689]

Output: 64.489


Input: Consider Input: [147.664, 167.561, 244.106, -42.988, 9.425, 79.806, 239.58]

Output: 120.736


Input: Consider Input: [18.957, -68.175, 114.05, -28.376, -83.193, 61.798, 41.101, 45.235]


Output: 12.675