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: [-61.905, -98.66, 90.472, 237.317, 5.243, 196.933]

Output: 61.567

Input: Consider Input: [-27.115, -11.908, 125.703, 202.749, 139.333, 242.982, -93.292, 161.484]

Output: 92.492

Input: Consider Input: [36.59, 158.023, 226.645, 38.863, 182.691, 18.624, -23.541]
Output: 91.128