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: ['A', 'y', 'u', 'S']

A: 0
****
Q: ['w', '7301', '9411', 'z', 'g', 'X', '1045', 'l', 'F', 'M', 'R', '7957', 'e', '5145']

A: 30859
****
Q: ['z', 'e', 'd', 'J', '549', '1803', 'Y', 'D', '4137', '2257', 'N', '8149', 'e', 'g', '1303', 'j', '925', '2845']

A:
21968
****