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: [-44.471, 208.445, 208.318, -34.134]

Output: 84.54


Input: Consider Input: [-40.246, -7.512, 174.245, -98.6]

Output: 6.972


Input: Consider Input: [173.059, -30.483, 157.12, 173.745, -65.192, -29.547, 98.641]


Output: 68.192