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: [-10.287, -0.47, 195.152, 209.845, -64.645, -82.959, 106.327]

Output: 50.423


Input: Consider Input: [72.755, 233.932, 245.785, 92.401]

Output: 161.218


Input: Consider Input: [5.688, 217.21]


Output: 111.449