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: ['6255', '8457', 'V', 'z', '4405', 'X', '9267', '5329', 'I']

A: 33713
****
Q: ['K', '479', 'u', '3489', 'o', '9589', '7153', '7649', '123', 'a', 'A', '3951', '847', 'N', 'R', '947', '9243', 'G', 'a']

A: 43470
****
Q: ['e', 'Z', '8489', 'p', '9439', '7949', 'u', 't', '6689']

A:
32566
****