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: [98.834, 143.231, 35.995, -64.696]

Output: 53.341


Input: Consider Input: [1.222, 33.339, 163.969]

Output: 66.177


Input: Consider Input: [69.459, 195.636, 86.282, 225.846, 246.286]


Output: 164.702