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:
['6565', 'T', 'O', '2901', '5121', 'y', '9617', 't', '7825']
answer:
32029


question:
['h', '2335', '2669', '6035', '9901', '7721', 's', '6181', 'C', 'l', 'x', '8275', '1103', 'S', '6447']
answer:
50667


question:
['b', 'S', '8455', 'S', 'R', 'z', '2299', '5655', '157', 'X', '3779', 'v', '9975', 'c', 'P', 'O', 'k']
answer:

30320