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: [-86.423, 157.154, 69.563, -67.516, 147.66, 216.018, 213.404]

Output: 92.837


Input: Consider Input: [9.828, 248.054, 20.871, 99.749, 52.797, -86.856, 65.438, 53.627]

Output: 57.939


Input: Consider Input: [-84.527, 79.802, 199.903, 26.161, 115.518, 32.556, 97.527, 249.729, 127.751, 102.687]


Output: 94.711