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: [178.494, 84.034, 110.102, -84.859, 20.308, 247.007, 56.012, 240.672, 37.917, 51.613]

94.13