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: [140.332, 92.06]

Output: 116.196


Input: Consider Input: [-6.992, -36.177, -95.203, 87.142]

Output: -12.808


Input: Consider Input: [168.957, 217.72, 62.286, 53.797, -12.139, 161.401]


Output: 108.67