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: [135.962, 136.509, 77.88, 148.448]

Output: 124.7


Input: Consider Input: [24.119, 239.006, 239.873, 236.27, 134.34]

Output: 174.722


Input: Consider Input: [-50.848, 135.142, 22.977, -67.121, -70.758, -56.177]


Output: -14.464