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: [-1.31, 169.522, -26.172, 111.289]

Output: 63.332


Input: Consider Input: [-51.603, 117.351, -67.451, 218.664, 68.981, 167.005, -53.851, 104.996]

Output: 63.012


Input: Consider Input: [196.824, -37.158, 214.326]


Output: 124.664