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:
['Q', 'v', 't', '223', 'm', 'l', 'c', 'M', 'b', '2227', 'P', 'e', 'n', 'f', 'S', '2205', '3517', '5545']

Ex Output:
13717


Ex Input:
['j', 'A', 'L', 'i', 'I', '3827', '8245', 'H', 'J', '8117', 'w', '4659', 'Y', 'x', 'K']

Ex Output:
24848


Ex Input:
['9589', '8205', '4199', 'V', '2863', 'b', '2985', '8965', '1159', '7705']

Ex Output:

45670