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.

Q: ['7335', '813', '6461', '8903', '3709', 'V', 'G', 'I', 'P', 'p', 's', 'v', 'R', '4697', '4263', '9897']

A: 46078
****
Q: ['G', 'e', 'R', '4427', '3401', '3065', 'I', '2781', '6829', '5261']

A: 25764
****
Q: ['U', 'A', '4443', '5987', '9109', '8837', '3753', 'f', '1609', '4219', 'T', '6559', 'N', '4735', '7751', 'j', 'W', 'r', '6507']

A:
63509
****