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.

['187', 'J', 'l', 'p', '1009', 'g', '5817', 'V', 'B', 'Z', '3329', '9253']
19595

['2237', '2597', '2593', 'Y', '5345', 'g', 'l', 'I', 'p', 'u', 'L', 'T', '617', '9759', 'b', 'w', '7097', '9863']
40108

['4893', '8855', '7789', '2983', 'u', 'R', 'H', '8969', '4515', 'U', 'k', 'P', '8293', '375', '6895', 'n', 'z', '9651']

63218