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: [58.371, 4.131]

Output: 31.251


Input: Consider Input: [181.256, -78.191, 162.427, -90.527, 123.709, 248.073]

Output: 91.124


Input: Consider Input: [-97.137, 210.145, 36.372, 65.886, -6.845, 108.533, 231.138, 113.102]


Output: 82.649