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: ['z', '9173', 's', '8937', 'h', '1881', '7929', 'b', '2441']

SOLUTION: 30361

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

SOLUTION: 13766

PROBLEM: ['995', 'N', '7377', '4479', '6131', '8947', 'P', '3109', 'T', '3795', 'V', '5679', '6083', '2685', '5743']

SOLUTION:
55023