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: ['q', 't', '4837', 'F', '2367', '1867', '8361', 'm']

SOLUTION: 17432

PROBLEM: ['S', 'W', '2171', '6405', 'h', 'C', '1597', '7109', 'Q', 'p', '2747', 't', 'J', 'q', '1883', 'v', 'O']

SOLUTION: 21912

PROBLEM: ['9655', 'o']

SOLUTION:
9655