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: [219.769, -36.26, 3.121, -22.5, 124.372]

Output: 57.7


Input: Consider Input: [227.601, -61.961, 78.822, -29.52, 126.039, -44.098, 112.374, -19.23, 69.758]

Output: 51.087


Input: Consider Input: [130.739, 36.207, 93.723, -45.692, -50.344, 174.545, 237.981, -53.065]


Output: 65.512