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: ['3895', 's', 'j', '7755', 'H', '7941', '4903', 's', '3629', '1183', '1001', '5569', 'q', '4735']

SOLUTION: 40611

PROBLEM: ['7763', '6003', 'V']

SOLUTION: 13766

PROBLEM: ['847', 'r', 'a', '9459', 'C', '7911', '863', 'v']

SOLUTION:
19080