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: [138.526, 60.81, 233.845, -33.602, 189.784, 13.888, 184.543, 53.635, 18.299, -87.132]

Output: 77.26


Input: Consider Input: [-46.14, -0.077, 72.663, 81.035, -24.144, 66.514, 98.199]

Output: 35.436


Input: Consider Input: [68.657, 143.891, 189.24, -25.665, 102.958, 222.105, 87.922, 194.815, 5.816, 236.676]


Output: 122.642