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: [84.142, -99.804]

Output: -7.831


Input: Consider Input: [120.682, 53.847]

Output: 87.264


Input: Consider Input: [24.294, 103.409, -80.719, 96.027, 56.817, 18.594, 138.212, -43.989]


Output: 39.081