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:
['901', '1939', '7637', '8863', 'X', '5003', '8791', '4757', 'E', '1525', 'y', '9735']
answer:
49151


question:
['b', 's', 'v', '4757', '9063', 'I', '8397', '7975', 'Q']
answer:
30192


question:
['3557', '3345', '307', '9791', '1897', 'O']
answer:

18897