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: [155.513, 206.938, 235.799]

Output: 199.417


Input: Consider Input: [77.498, 234.955, 184.005, -48.344, 113.167]

Output: 112.256


Input: Consider Input: [63.888, 183.194, 143.942, 27.732, -79.234]


Output: 67.904