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: ['w', '4181', 'g', 'j', '1823', 'q', 'i', '709']

A: 6713
****
Q: ['2923', '3573', '6179', '7673', '6551', 'B', '315', '5169', 'm', '9405', 'm', 'Z']

A: 41788
****
Q: ['3665', 'w', '8843', 'd', '9599', '3645', '6345', '2817', 'H', 'P', 'W', 'p', '2193', '7411', '5307', '2285']

A:
52110
****