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: [146.815, 125.411, 84.472, -63.01, 79.256, -34.213, 248.004, -86.96, -39.397]

Output: 51.153


Input: Consider Input: [66.037, 30.958, 124.853]

Output: 73.949


Input: Consider Input: [116.81, 174.26, 214.05]


Output: 168.373


