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: [218.46, 7.937, 155.624, 82.813, 93.516]

Output: 111.67


Input: Consider Input: [151.151, 144.049, 217.252]

Output: 170.817


Input: Consider Input: [249.93, 193.143, 201.486, 35.858, 185.388, -99.965, 72.185]


Output: 119.718