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: ['6001', '6423', '5591', '8721', 't', 'x', '3723', 'E', 'F', '7353', 'b']

A: 37812
****
Q: ['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']

A: 64912
****
Q: ['2931', 's', 's', '6565', '8233', '3377', '3361', '265', 'y']

A:
24732
****