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:
['6629', 'o', 'e', '497', '4865', '8733', '5733', '7337', 'N']
answer:
33794


question:
['7335', '813', '6461', '8903', '3709', 'V', 'G', 'I', 'P', 'p', 's', 'v', 'R', '4697', '4263', '9897']
answer:
46078


question:
['5121', 'D', 'z', '281', 'n', '2745', 'h', 'M', 'Y', '2661', 'p', '6693', '8995', 'j']
answer:

26496