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: [219.769, -36.26, 3.121, -22.5, 124.372]

Output: 57.7


Input: Consider Input: [197.301, -51.197, 167.98, 104.697, -8.64, -83.271, 119.387, 35.643, 83.898]


Output: 62.866