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: [14.587, 49.21, -21.274, -54.714, 243.935, 218.436]

Output: 75.03


Input: Consider Input: [-19.64, 5.69, 102.211, 159.062, 7.744, 242.03, 141.431, 105.364, 40.338]

Output: 87.137


Input: Consider Input: [39.68, -26.777]


Output: 6.451