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', 'm', 'P', '2433', '6731']
answer:
9164


question:
['w', 'V', '3359', '8847', '7551', '2481', 'Y', 'j', 'L', 'G', '7905', 'v', '4141', '2229', 'k', 'H', '3517', '3885', '3665', 'O']
answer:
47580


question:
['Z', 'X', 'k', 'v', 'h', 'l', 'Y', '1691', 'I', 'S', 'S', '3325', '9849', 'K', 'G', '7275', 'S', 'I']
answer:

22140