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: [102.137, 68.215, 58.59, 33.217, 66.776, 139.924, 54.927, -5.843, 207.756, 233.008]

95.871