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: ['129', '8667', 'E', '2919', 'e', 'Y', 'h', 'm', '501', '5911', 'q', '4955', 'D', '1369', 'W']

A: 24451
****
Q: ['251', '2155', '5029', 'k', 'j', 'I']

A: 7435
****
Q: ['6291', 'S']

A:
6291
****