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:
['N', '1337', 'C', 'T', '863', 'j', '2369', 'P', 'A', 'x', '5725', '2333', 'Q', '9149', 'Q', '8529', 'N']

Ex Output:
30305


Ex Input:
['457', '173', '6807', 'o', '555', 'l', 's', 'Z', 'm', '3035', '1283', '5645', 'S', '8641', 'J', 'Z', 'z', 'K']

Ex Output:
26596


Ex Input:
['629', '5415', '2803', '5337', '5907', '9069', 'r', 'Y', 'E', 'M', 't', '2633', 'A', 'Q', '6939', 'd']

Ex Output:

38732