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: [53.391, 118.782, 102.742]

Output: 91.638


Input: Consider Input: [237.501, 67.08, 13.857]

Output: 106.146


Input: Consider Input: [-6.586, -25.096, 145.54]


Output: 37.953