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', 'O', 'H', '7619', '6435', 'X', 'g', '1663']

SOLUTION: 15717

PROBLEM: ['1147', 'f']

SOLUTION: 1147

PROBLEM: ['611', 'K', '1473', 'W', '7867', 'b', '7823', 'X', 'v', '4411']

SOLUTION:
22185