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:
['8609', '8045', '2517', '3821', 'x', '3895', 't']
answer:
26887


question:
['x', '5259', 'T', 'L', 'C', 'H', '2493', 'u', '3851', '2439', 'U']
answer:
14042


question:
['c', '5691', '2573', '2725', '4945', 'm', '4555', 'c', '609', '3455']
answer:

24553