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


question:
['7293', '2619', '2459', '3829', 'J', 'c', 'a', 'a', '311', 'x', 'r', '6123', '2847', '4809']
answer:
30290


question:
['9507', 'W', 'g', 'k', '5191', '2597', 'S', '2145', 'X', 'n', '6537', 'K', 'l', '8133', '6263', '885', '969', 'f', '5021', 'i']
answer:

47248