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: [229.28, 202.632, 129.717, 211.459, 203.204]

Output: 195.258


Input: Consider Input: [74.601, 131.018, -45.91]

Output: 53.236


Input: Consider Input: [237.501, 67.08, 13.857]


Output: 106.146