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:
['r', 'b', 'G', 'H', '255', '6809', '5133', '1059', '4317', 'P', '7219', 'd', '805', 'G', '5243', '8305', '8509', 'o']
answer:
47654


question:
['6293', 'o']
answer:
6293


question:
['1061', 'J', '1621', 'O', '4291', 'J', '933', 'V', '6739', 'R', '1619', '4293', 'i', 'N', '89', '2749', '7111', '1463']
answer:

31969