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: [234.272, 196.413, -92.425]

Output: 112.753


Input: Consider Input: [152.683, 147.968, 62.877, -44.254, 4.344]

Output: 64.724


Input: Consider Input: [-76.564, 162.19, -62.017, 61.191]


Output: 21.2


