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: ['3107', 'D', '9595', '8807', 'Q', 'o', 'T', 'N', 'A']

A: 21509
****
Q: ['c', 'r', 'R', 'a', '6915', 'C', '3651', 'j', 'L', '9761', '2923', 'Z', 'e', '833', 'W', '1867', 'G', 'H', 'T']

A: 25950
****
Q: ['x', 'Q', 's', '2325', '421', 'M', 'i', '1081', 'U', 'Q']

A:
3827
****