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.

Ex Input:
['7087', 'P', 'i', 'e', '4875', 'e', 'F']

Ex Output:
11962


Ex Input:
['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']

Ex Output:
30507


Ex Input:
['U', '6651', '6197', '2367', '2399', 'm', 'q', '1693', '1921', '2239', '2735', 'L', 'o']

Ex Output:

26202