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: ['b', 'W', 'V', 'R', '3761', 'U', '4553', '1803', 'W', '7775', '1067', 'Y', 'D', '3159']

A: 22118
****
Q: ['3705', '9217', 'C', '4609']

A: 17531
****
Q: ['X', 'g', '1069', 'N', 'c', 'h', '2553', 'O', 't', '6085', '763', 'v', '3473', 'c', 'm', '489', 'g', 'H', '2315', '9573']

A:
26320
****