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: [72.755, 233.932, 245.785, 92.401]

Output: 161.218


Input: Consider Input: [-67.542, 65.934, 223.305, 25.694, 159.037]

Output: 81.286


Input: Consider Input: [61.739, -99.854, -53.677]


Output: -30.597