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: [194.758, 88.133, 200.788, 180.737, 125.39, -38.323, 223.081, -51.14, 152.078, 42.7]

111.82