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:
['4997', '5005', '6773', 'q', 'K', '8391', '7303', 'K', 'N', '5417', '8573', 'z', '8653', '8343', 'm', 'L', '1587', 'p', '5323']
answer:
70365


question:
['8529', '2657', '1599', 'b', '8187', '7005', '7481']
answer:
35458


question:
['8005', '7043', 'H', '477', 'Y', 'z', '2397', '1397', 'I', 'H', '331', '2521', '9027', 'T', '3737', '7']
answer:

34942