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.

['8809', '4559', '2715', 'w', '9903', 'h', 'u', 'F', '9369', '6149']
41504

['D', 'C', '7295', 'g', 'j', '1387', 'O', '4701', 'B', 'd', 'W', 'b', 's', 'n', 'n', '4917', '2941', '1825', 'x']
23066

['t', 'y']

0