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: [185.43, -65.359, -83.971, 30.359, -1.788, 181.168, 210.362, -90.041, -26.224, 239.651]

Output: 57.959


Input: Consider Input: [233.84, -38.337, 10.341, 195.901, 68.586, 214.429, 213.823, 88.799]

Output: 123.423


Input: Consider Input: [220.17, 153.207, 146.433]


Output: 173.27