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: [199.874, -45.634, -39.343, 75.985, 143.35, 87.15, 120.645, -34.636, 159.567]

Output: 74.106


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: [107.436, 144.094, 193.5, 158.151, -52.719, 69.977, -43.237]


Output: 82.457