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: ['h', '9539', '3373']

A: 12912
****
Q: ['3469', 'n', '5561', '8597', '921', '4737', 'r', 'P', '7127', '3651', 'D', '1703', 'y']

A: 35766
****
Q: ['N', '9187', '6483', '6707', '9873', 'X', '951', 'T', '9257', 'G', '4957']

A:
47415
****