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: [219.428, 229.08, 24.616, -83.165, -28.839, 195.219, 170.491, -78.673]

Output: 81.02


Input: Consider Input: [-51.603, 117.351, -67.451, 218.664, 68.981, 167.005, -53.851, 104.996]

Output: 63.012


Input: Consider Input: [87.797, 75.582, 39.863, -70.561]


Output: 33.17