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.

['g', '5301']
5301

['i', 'w', '8117', '2823', 'C', 'x', 'w', '5959', 'g', 'e', 'L', 'V', 'i', 'w', 'n']
16899

['w', '1893', '1337', '8311', '815', 'v', 'R', 'v', '1307', '7497', 'Y', '3903', '8617', 'N']

33680