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: ['9863', 'y']

SOLUTION: 9863

PROBLEM: ['5215', 'c', '839', 'V']

SOLUTION:
6054