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

Output: 57.936


Input: Consider Input: [41.212, 221.072, 226.666, 3.688, 180.239, 142.767, 184.012, 63.249]

Output: 132.863


Input: Consider Input: [232.685, -12.659]


Output: 110.013