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: ['l', '5369', 'z', 'U', 's', '2357', '3367', 't', '6539', 'K', 'a', 'Q', 'x', 'e', '6459', 'K', 'B', 'f', 'j']

A: 24091
****
Q: ['f', '6703', 'c', 'c', 'l', '2511', '6507', 'b', '9727', 'l', '1251', 'I', '5231', '91', 'L', 'M', 'd']

A: 32021
****
Q: ['3743', '7301', 'F', 'c', '8983', '8179', 'P', '1829', '8565', 'L', 'L', 'P', 'K', 'T', '7949', 'X', 'J', '6903', '2283', '5967']

A:
61702
****