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.

['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']
12302

['6217', 'A', '1925', 'o', '1433']
9575

['g', '2807', 'Q', 'g', '5531', '2699', '2425']

13462