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:
['D', '8591', 'b', 'n', 'e', '883', '8923', '245', 'z', '5643', 'C', '2911', '9275', '711', '7299', '3449', '4799', '6065']
answer:
58794


question:
['57', '9977', '2657', 'p', '9573', '7745', '4755', 'U']
answer:
34764


question:
['7855', '7083', 'u', 'I', '4557', 'M', 'k', '7403', '8037', '2865', 'Q', '9791', 'p', 'p', 'Y', '6073']
answer:

53664