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: [227.874, 175.626, 193.094, 63.963, 139.938]

Output: 160.099


Input: Consider Input: [-27.872, -9.249, 218.646, -32.0, 49.715, 58.225, 118.489, 29.679, 31.407]

Output: 48.56


Input: Consider Input: [8.854, 74.189, 92.833, -33.086, -91.707, 67.05, 80.273, 24.698, 20.273, 33.304]


Output: 27.668