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: [-31.252, 246.934, 96.512, 19.356, -50.759, 134.528, 176.914, 17.007, 171.802]

Output: 86.782


Input: Consider Input: [80.285, 75.631, 5.715, -68.695, 134.225, 22.744, 63.203, 136.862, 60.995]

Output: 56.774


Input: Consider Input: [168.793, 81.166, 97.445, -23.723, 15.662, -39.416, -69.94]


Output: 32.855