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: [204.373, 102.204, 192.156, 242.194, -46.256, 48.572, 179.409, -77.044, -2.672, 50.588]

89.352