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: [-19.26, 130.53, 225.367, 179.475, -63.39]

Output: 90.544


Input: Consider Input: [195.019, 144.893, 32.821, -21.855, 136.755]

Output: 97.527


Input: Consider Input: [12.999, 219.01, -2.502]


Output: 76.502