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:
['7067', 'E', 'C', '1879', 'Z', 'u', 't', '2053', '6769', 'r', '5207', '7009', 'H', '5587', 'i', 'M', '1357', 'A']
answer:
36928


question:
['3877', '2685', 'f', 'r', 'q', 'o', 'k', 'i', '2299', '9075', 'X', '4303', '7379', '9205', 'V', '9655', 's']
answer:
48478


question:
['H', '677', '5197', '6715', '5911', '5049', '397', 'L', 'C', '5009', '1875', 'g', '2723', 'G', 'F', '7459', 'e']
answer:

41012