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: ['o', 'L', 'E', 'V', 'D', 's', 'Z', 'm', 'a', '2785', 'I', 'v', 'B', '7909', '1599', 'V', 'N']

SOLUTION: 12293

PROBLEM: ['2215', '4369', 'e', '4979', '4069', 'J', 'L', '789', 'w', 'p', '9533', '8523', '2531']

SOLUTION: 37008

PROBLEM: ['e', 'q', 'F', '699', 'x', 'P', 't', 'h', '1037', '2499', '5419', '1963', 'i', '8799', '3227']

SOLUTION:
23643