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: ['4161', 'E']

A: 4161
****
Q: ['Q', '1767', '5523', 'I', '933', 'h', '2189', 'f', '7795', 'X', 'M', 'G', '1215', 'W', '8619']

A: 28041
****
Q: ['n', 'a', 'O', 'T', '8151', '5727', 'u', 'd']

A:
13878
****