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: ['9989', 'B', 'E', '5181']

A: 15170
****
Q: ['2097', '7815', 'f', '1705', '7553', 'C', 'n', '7091', '1253', 'z', '9229', 'H', 'N', '6481', 'H', 'M', 'G', '4527', '8537']

A: 56288
****
Q: ['8661', '4279', '1991', 'z', 'O', '9233', '7065', 'Z', 'Z', '9477', 'i']

A:
40706
****