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: ['Q', '1767', '5523', 'I', '933', 'h', '2189', 'f', '7795', 'X', 'M', 'G', '1215', 'W', '8619']

A: 28041
****
Q: ['L', 'w', '2783', '6993', 'd', '9173']

A: 18949
****
Q: ['E', '4587', 'O', '1555', 'd', '9073']

A:
15215
****