instruction:
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.
question:
['6551', 'm', '3941', 'F', 'K', 'u', '7981', '9581', 'X', 'M', 'N', 'e', 'G', 'i']
answer:
28054


question:
['l', 'B', 'Y', '7543', '5091', '1917']
answer:
14551


question:
['U', 'h', '4537', '6839', 'a', 'n', 'C', '5459', 'z', 'm', '9579', '2497', 'b', 'C', '6135', '1565', 'p', '8793']
answer:

45404