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: ['3107', 'D', '9595', '8807', 'Q', 'o', 'T', 'N', 'A']

A: 21509
****
Q: ['A', '6323', 'T', 'H', 'M', 'S', 'D', 'r', 'v', '8169', '7649', '5149', 'x', '6275']

A: 33565
****
Q: ['391', 'o', '6821', 'V', 'Y']

A:
7212
****