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: [231.159, 217.795, 230.676, -11.951, -82.697, 31.413]

Output: 102.732


Input: Consider Input: [157.631, 106.369, -25.319, 160.78, -87.597, 222.819, -60.99, 36.758, -3.695]

Output: 56.306


Input: Consider Input: [163.598, 129.758, 237.743, -86.766]


Output: 111.083