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: ['x', 'V', 'g', '5469', 'c', '7873', 'T', 'p', '8109', '5395', 'h', 'z', 'T', '9373']

SOLUTION: 36219

PROBLEM: ['l', 'V']

SOLUTION: 0

PROBLEM: ['2703', '2939', '4697', 'L', '7881', '9187', 'Z', '5187', 'E', 'w', 'D', '7605', '1439', '8749', 'p']

SOLUTION:
50387