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: [102.524, 88.129, 196.972]

Output: 129.208


Input: Consider Input: [102.553, 221.594, -69.406, 192.534, 139.703, -38.208, 228.963, 32.921]

Output: 101.332


Input: Consider Input: [-48.824, 103.022, 39.496, -9.796]


Output: 20.975