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: ['7215', 'd', 'q', 'k', '9301', 'P', 'x', 'C', 'g', 'e', 'o', '2769', '6993', '9769', 'v', '9007', '4131', '8627', 'q']

A: 57812
****
Q: ['W', '8593', '9427', '9931', '8919', 'X', 'B', '8861', '1933', 'Z', 'V', '3427', 'S', '8717', 'd', '1593', '7659', 'Q', 'n']

A: 69060
****
Q: ['1939', 'y', '9601', '7943']

A:
19483
****