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: [-7.892, -43.609, 46.236, -78.213, -76.066]

Output: -31.909


Input: Consider Input: [-19.64, 5.69, 102.211, 159.062, 7.744, 242.03, 141.431, 105.364, 40.338]

Output: 87.137


Input: Consider Input: [248.023, 57.595, -73.013, 200.246, 142.738, -70.94, -43.129, -7.477, 200.087, 6.452]


Output: 66.058