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: [-73.074, 87.743, 221.875, 126.604, 31.513, 196.863]

Output: 98.587


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

Output: 160.099


Input: Consider Input: [171.77, -91.408]


Output: 40.181