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:
['a', 'j', 'v', '619', 't', 'a', '5777', 'x', 'R', 'P', '8897', 'j']
answer:
15293


question:
['7361', '3605', 'V', '2039', '9665', 'X', 'b', '1195', '657', '6509', '7195', '2013', '1847', 'v', '9499', '1761']
answer:
53346


question:
['9025', 'Y', 'I', '5849', 'C', 'h', 'W', 'w', 'I', '9973', '6161', '7373', '2595', 'B', 'T', '1079', 'x', 'N', 'V']
answer:

42055