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.

['c', 'd']
0

['J', 'S', 'S', 'U', 'w', '7691', '7529', 'B', '3861', '4557', 'd', '569', '1547']
25754

['1867', '5343', 'p', '5051', '1891']

14152