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: ['6161', 'p', '2839', 'c', '5905', '1729', 'j', '5901', '3013', 'e']

A: 25548
****
Q: ['7187', '5651', 'd', '4869', 'q', '2375', '3547']

A: 23629
****
Q: ['z', 'k', '8711', '5051', '993', 'h', 'g', 'q', 'q', 'U']

A:
14755
****