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: [66.037, 30.958, 124.853]

Output: 73.949


Input: Consider Input: [-3.302, 23.685, 69.661, 74.979, -46.96]

Output: 23.613


Input: Consider Input: [-84.316, 211.229, 6.601, 237.546, 125.837, 94.941, 37.632, 236.012, 198.728]


Output: 118.246


