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: [216.087, 41.07, 213.683, 53.822, 31.214]

Output: 111.175


Input: Consider Input: [-34.666, -36.597, -53.483]


Output: -41.582