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: ['K', '5815', 'E', 'c', '7379', '4995', 'w', 'B', 'j', '6227', 'B', '733', '1491', '3191', '9413', '2751', 'O', 'J', '6239', '3521']

A: 51755
****
Q: ['773', 'e', '4451', 'S', 'I', 'r', 'e', 'V', 'Q', 'g', 'J', 'L', '7655', 'O']

A: 12879
****
Q: ['i', 'b', '5487', 't', 'l', 'w', 'd', 'q', 'Z', '4773', '6543', '5675', 'F', '3441', '2761', '387', '9071']

A:
38138
****