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: ['6941', 'I', 'j', '6135', '6525', '7853', '5607']

A: 33061
****
Q: ['2923', '3573', '6179', '7673', '6551', 'B', '315', '5169', 'm', '9405', 'm', 'Z']

A: 41788
****
Q: ['2561', '6723', 'S', '2019', 'm', 'E', 'c', 'w', 'i', 'P', 'd', '7269']

A:
18572
****