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: [201.917, 240.159, 36.615]

Output: 159.564


Input: Consider Input: [-51.496, 56.177, 55.554, -17.425, -6.185, 3.721]

Output: 6.724


Input: Consider Input: [128.007, -8.497]


Output: 59.755