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: ['R', '9751', '4367', 'l', 'N', '5125', '8751', '7507', 'y', 'K', '6127']

A: 41628
****
Q: ['6585', '5263', '9497', '1117', 'a', 'F', 'w', '6595', '547']

A: 29604
****
Q: ['9187', '5885', 'q', 'I', 'A', 'A', 'D']

A:
15072
****