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: ['1319', '6105', '1119', 'c', 'p', '7617', '5113', 'a', '5115', '6731', '6693']

A: 39812
****
Q: ['4201', '6445', '4009', 'q']

A: 14655
****
Q: ['55', '417']

A:
472
****