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: [22.306, 72.768, 218.947, 52.973, 100.121, 157.59, -92.109]

Output: 76.085


Input: Consider Input: [125.332, 80.443]

Output: 102.887


Input: Consider Input: [248.64, -31.226]


Output: 108.707