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:
['s', '407', '7983', '1523', '8983', '9841', 'p', 'y', 'N', '7633', 'T', '4177', 'Z', 'Y', '3223', '7125', '2601', '7467', '3039']
answer:
64002


question:
['c', 'E', 'M', '1303', 'y', 'H']
answer:
1303


question:
['j', '2811', '6949', 'w', 's', '6755', '8853', 't', 'c', 'D', 'I']
answer:

25368