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: ['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']

SOLUTION: 5036

PROBLEM: ['Q', '9787', '7533', '9489', 'C', '1753', '5121', '1405', '9267', '4815', 's', '5887']

SOLUTION: 55057

PROBLEM: ['t', '6521', 'e', '205', '4165', 'Z', 'H', 'p', 'V', '8377', 'W', '9765']

SOLUTION:
29033