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: [3.556, 65.177]

Output: 34.366


Input: Consider Input: [59.251, 198.593]

Output: 128.922


Input: Consider Input: [124.612, 78.563, 2.944]


Output: 68.706