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:
['3215', 'h', '9133', '2771', 'F', 'x', '9033', '709', 'q']

Ex Output:
24861


Ex Input:
['r', '2251', 'X', 'H', 'a', '5463', 'g', 'M', '9797', '1581', 'o', 'm', 'v', 'E']

Ex Output:
19092


Ex Input:
['Z', '1479', '3585', '2805', 't', 'J', '1997', '1701', '3435', '7593', 'F', '1811', 't', 'Z']

Ex Output:

24406