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: [-66.676, -7.063, -18.028, 13.407, 54.369, 148.394, -93.155]

Output: 4.464


Input: Consider Input: [161.683, 162.041, 187.429, -79.681, 60.809, 225.806]

Output: 119.681


Input: Consider Input: [-16.273, -53.495, 230.496]


Output: 53.576