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:
['Y', '263', '641', '1163', 'p', 'r', 'L', '4425', 'C', '7585']
answer:
14077


question:
['z', 'j', 'M', 'E', '1689', '8413', '2603', 'b', '5101', 'w', 'r']
answer:
17806


question:
['S', 'D', 'S', 'h', 'l', 's', 'B', '999', 'N', '7903', 'X', 'J', '4081', 'u', 'p']
answer:

12983