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: [12.155, 204.528, 85.84, 66.186]

Output: 92.177


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: [102.426, 125.598]


Output: 114.012