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: [148.261, -51.308, -98.748, -41.832, 44.313, -41.042, -19.943]

Output: -8.614


Input: Consider Input: [87.234, -30.861, 221.46, 120.15, -85.065, 67.024, 144.174, -64.546]

Output: 57.446


Input: Consider Input: [11.014, 180.327, 132.873, 79.311, -63.044, 6.042, 13.948, 218.273, -28.381]


Output: 61.151