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:
['7277', 'c', '9587', '2613', '853', 'w', 'y', '4067', 'o', 'u', 'j', 'W', '1517', 'x', 'Y']
answer:
25914


question:
['j', 'A', 'L', 'i', 'I', '3827', '8245', 'H', 'J', '8117', 'w', '4659', 'Y', 'x', 'K']
answer:
24848


question:
['3759', '4803', 'n', 's', '8431', '1761', 'V', '1557', 'l', 'l', 'o', 'A', 'd', '6649', '5215', '4925', '7827', '5393', '7771']
answer:

58091