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

Output: 63.012


Input: Consider Input: [108.822, 139.139, 130.938, 100.996, 155.361, 8.752, 221.639, -12.877]

Output: 106.596


Input: Consider Input: [-17.789, 89.817, 133.498, 197.553, 151.859, -83.319]


Output: 78.603