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: ['6161', 'p', '2839', 'c', '5905', '1729', 'j', '5901', '3013', 'e']

SOLUTION: 25548

PROBLEM: ['6515', '5525', 'o', 'Q', '9049', 'f', 'p', 'X', '2057', 'h', '7585', '3617', '7817']

SOLUTION: 42165

PROBLEM: ['3041', '2169']

SOLUTION:
5210