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: [-31.241, 73.981, 127.71, 166.275, 35.028, -10.432]

Output: 60.22


Input: Consider Input: [57.506, 172.357, 191.473, 131.849]

Output: 138.296


Input: Consider Input: [193.704, 112.596, -35.882, 133.038, -31.95, 188.938, -23.184, -87.383]


Output: 56.235