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: [89.508, 137.402, 51.152, 7.276, 70.029, 30.036, 103.716, 91.252, 168.839, 229.114]

97.832