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', '445', '2601', 'h', 'V', 'C', 't', 'o', 'H', '3707', '7601']

SOLUTION: 14354

PROBLEM: ['2787', '6085', '6989']

SOLUTION: 15861

PROBLEM: ['O', 'U', '7951', '65', '7153', '7055', 'D', 'q', 'z', '8165', 'M', '9239', 'c', '6843', '7963', '5375']

SOLUTION:
59809