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:
['h', '2295', '2913', 'I', '5273', 'L', '2739', '8227', '6537', 'e', '6491', '5463', 'i', '4337', '537']

Ex Output:
44812


Ex Input:
['i', 'o', '5363', '5937', 'x', '6705', 'w', '5495', 'E', '9823', 'F', '83', '8443', '5223']

Ex Output:
47072


Ex Input:
['d', '1903', '5193', '7347', 'f', 'j', '6877', '2405', 'r', '37', 't', 'J', 'N', 'g', 'x', '4697', 'y']

Ex Output:

28459