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: [118.708, 93.351, 98.357, 89.619, 94.808, 26.052, 217.183, 50.426]

98.563