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:
['D', '9679', 'e', '5537', 'G', 'l', '2653', 'a', 'Y', '8467', 'q', 'L', '7239', 'O']
answer:
33575


question:
['4515', '3911', 'M', 'T', 'w', 'F']
answer:
8426


question:
['Z', 'O', '2885', '703', 'y', '589', '1471', '5505', 'g', '6077', '7689', 'T', '8559', 'O', '4655', 'N', '521', '1569', 'A', 'z']
answer:

40223