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.

Ex Input:
[235.595, 227.906, -52.328, 100.922, 124.177, 149.582, -41.738]

Ex Output:
106.302


Ex Input:
[37.853, 78.283, 143.128, 82.561, 181.661, -89.154, 50.037]

Ex Output:
69.196


Ex Input:
[-93.617, 73.236, -10.334, 148.675, -17.128, 223.898, -51.981, 125.796, 31.407]

Ex Output:

47.772