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: [0.714, 191.083, 204.628, 16.665, 242.75, 217.507, 35.562, 27.632, 189.705, 115.146]

124.139