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.

['b', 'W', 'V', 'R', '3761', 'U', '4553', '1803', 'W', '7775', '1067', 'Y', 'D', '3159']
22118

['4685', 'q', 'O', 'o', '3453', 'o', 'Y', 'C', 'a', 'i', '7283', 'J', 'n', 'Q', 'i']
15421

['D', 'I', 'Q', '7451', '2025', '9155', 'r', '5057', '1513', 'B', '8223', 'v', '5411', '9635', 'g', '2915', 'y', 'w', 'w']

51385