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: ['k', '1489', 'x', '6543', 'I', 'l', 'D', '6299', '1473', 'a', '7661', 'z', 'E', 'Z', 'U', '3671', '2873', 'e', 'p']

A: 30009
****
Q: ['3107', 'D', '9595', '8807', 'Q', 'o', 'T', 'N', 'A']

A: 21509
****
Q: ['w', 'E', 'i', '9119', 'W', '5981', 'M', 'a', '1991', 'c', 'f', '4249', '6037', '931', '3943']

A:
32251
****