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: [227.601, -61.961, 78.822, -29.52, 126.039, -44.098, 112.374, -19.23, 69.758]

Output: 51.087


Input: Consider Input: [-92.167, -67.984, -31.831, -21.057, 101.792, 114.116, 185.901, -25.874]

Output: 20.362


Input: Consider Input: [-21.77, 172.703, -31.807, 129.587, 84.624, 14.279]


Output: 57.936