Definition: 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: [46.655, 106.031, 23.6, 61.92, -49.527, 120.157, 168.321, -12.477, 232.348, 206.45]

90.348