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: ['H', 'i', '8085', 'E', 'q']

SOLUTION: 8085

PROBLEM: ['2485', 'Q', 'G', '5533', 'Y', '21', 'D', 'S']

SOLUTION: 8039

PROBLEM: ['1645', 'i', 'c', '861', 'W', 'F', 'o', 'v', 'K', '837', '9907', 'K']

SOLUTION:
13250