TASK DEFINITION: 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.
PROBLEM: ['h', 'a', '1645', '2391', '759', '519', '3331', '2831', '3427', '9893', 'u', 'J', '7391', '8379', 'V']

SOLUTION: 40566

PROBLEM: ['c', 'd']

SOLUTION: 0

PROBLEM: ['Y', 'S', 'u', 'C', 'z', 'a']

SOLUTION:
0