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: [237.501, 67.08, 13.857]

Output: 106.146


Input: Consider Input: [21.723, 130.05, 75.095]

Output: 75.623


Input: Consider Input: [231.84, -75.702, -76.577, 197.935, 160.394, 152.37, 208.164]


Output: 114.061