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: [234.272, 196.413, -92.425]

Output: 112.753

Input: Consider Input: [-11.211, 9.955, 208.942, 124.097, 118.282, 65.001]

Output: 85.844

Input: Consider Input: [10.631, 163.267, 136.722, 151.677, 121.448, 213.687, -18.511, -11.91, 232.959, 46.147]
Output: 104.612