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:
['6957', '4603', '5299', '8451', '9803', 'b']
answer:
35113


question:
['d', '5571', '6455', '4287', 'I', 'U', 'M', '8303', '8893']
answer:
33509


question:
['7763', '6003', 'V']
answer:

13766