Detailed Instructions: 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.
Q: [66.873, 218.261, 149.615, 131.278, -21.292, -15.403, 246.959]
A:
110.899