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:
['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']
answer:
30507


question:
['Y', '9053', 'N', '6921']
answer:
15974


question:
['v', '1787', '1161', '1579', '2667', 't', '6617', 'A', 'd', 'P', '8457', 'Q', '3563']
answer:

25831