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: ['543', '8351', 'I', 'M', '6647', '731', 'b', 'r', 'l', '3935', 'k', 'z', 'v', '2131', '7781', 'X', '9419', '5013', 'F']

A: 44551
****
Q: ['q', '8155', 'L', 'v', '2657', 'X', 'v', '2353', '151', 'R', '967', '4327']

A: 18610
****
Q: ['5725', 'X', '8677', 'v', 'n', 'e', 'O', '1691', 'F', 'M', 'm', 'h', '4649', '5157', '7251', '447']

A:
33597
****