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: ['3877', '2685', 'f', 'r', 'q', 'o', 'k', 'i', '2299', '9075', 'X', '4303', '7379', '9205', 'V', '9655', 's']

A: 48478
****
Q: ['j', '6731', 'h', 'G', 'F', '6899', '4317', 'm', '9491', 'l', '971']

A: 28409
****
Q: ['d', '1463', 'R', 'e', '6475', '8001']

A:
15939
****