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: [198.958, 97.355]

Output: 148.156


Input: Consider Input: [-42.956, 89.597, -60.477, 101.972, 77.479]

Output: 33.123


Input: Consider Input: [-10.81, -85.2, 175.121, 211.351, 97.893]


Output: 77.671