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: [-66.271, 56.586, -21.072, 136.915, 54.951, 112.054]

Output: 45.527


Input: Consider Input: [148.261, -51.308, -98.748, -41.832, 44.313, -41.042, -19.943]

Output: -8.614


Input: Consider Input: [29.807, 81.304, 61.195]


Output: 57.435