In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.
['9801', '7023', '1677', '6417', '6809', '5025', '9223', '4471', '1821', '6675', '2511', '8247', 'J', '8287', '8119', '7947', '6027']