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: [-94.475, 150.208, -46.949, 70.49, -4.341, -82.564, 144.79, 114.873, 2.76, 225.447]

48.024