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: [245.2, 202.565]

Output: 223.882


Input: Consider Input: [-33.746, 231.27, 122.704, -25.907, -56.96]

Output: 47.472


Input: Consider Input: [-52.79, -98.806, 233.869, 211.453]


Output: 73.432