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: [-10.548, 235.372, 62.362, 58.911, 83.851, 148.513, -94.587, -50.571, 117.327, 61.933]

61.256