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: ['5289', '1701', '5925', '7973', 'F', 'V', 'y', '5903', 'i']

SOLUTION: 26791

PROBLEM: ['T', '8333', 'C', 'Z', 'n', '1419', 'd', '3205', 'D', '1187', 'd']

SOLUTION: 14144

PROBLEM: ['2193', 'j', 'T', '6963', 'q', 'Z', 'W', 'I', '5155']

SOLUTION:
14311