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:
['I', '1941', '2423', '3381', 'J', '6589', 'h', 'D']

Ex Output:
14334


Ex Input:
['8763', 'k', '3653', 'v', 'd', 'D', 'm', '1037', 'c', 'F', '2349', '7843', '3259', 'v', '5555', '7565', '8137', 't']

Ex Output:
48161


Ex Input:
['V', 'N', '573', '1723', '47', 's', '2237', 's', 'M', 'j', 'P', 'T', 'k', 'h', '1445']

Ex Output:

6025