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: [212.618, -82.291, 210.651, 218.217, 0.112, -65.56, 216.532, 179.567, -1.07, 43.236]

93.201