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: [10.724, -65.993, 107.56, 154.38, 117.135, 114.495, 11.544]

Output: 64.264


Input: Consider Input: [72.326, -74.6, 127.566, -54.848, 198.529, -44.061, -28.155]

Output: 28.108


Input: Consider Input: [142.811, -25.319, 108.775, 219.338]


Output: 111.401