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: [148.345, 11.261, 201.116, -89.244, -36.153, 84.065, -8.147, 60.227]

46.434