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: [207.804, 175.122, 13.63, 217.625, -98.484]

Output: 103.139


Input: Consider Input: [179.836, 115.658, -58.613, 29.591, 198.709]

Output: 93.036


Input: Consider Input: [-42.657, -25.723]


Output: -34.19