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: [-17.026, 165.89]

Output: 74.432


Input: Consider Input: [216.087, 41.07, 213.683, 53.822, 31.214]

Output: 111.175


Input: Consider Input: [77.448, 114.649, -58.938, -21.766, -27.675, 91.595]


Output: 29.219