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: [244.1, -84.018, 7.772, 69.273, 99.397, 158.691, -0.315]

Output: 70.7


Input: Consider Input: [198.475, -38.691]

Output: 79.892


Input: Consider Input: [57.7, 168.939, 177.751, 182.067, 203.035]


Output: 157.898