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: [231.352, -24.17]

Output: 103.591


Input: Consider Input: [-67.542, 65.934, 223.305, 25.694, 159.037]

Output: 81.286


Input: Consider Input: [184.097, 161.433, -71.409, -13.302, 233.086, 12.99]


Output: 84.482