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: [110.201, 222.998, 249.974, -57.548, -19.215, 172.88, -29.832, 230.856, 205.181, 1.824]

108.732