Piecework is paid by the piece; workers who produce a greater quantity are paid at a higher rate. Use textboxes to accept input ensuring data validation; calculate amount earned and required summary data. Ensure the user can clear the input areas and also clear all data to start over. Confirm the users intent when selecting Clear All. Summary totals should not calculate or display when failing data validation or starting over from Clear All disable Summary button until first entry has been calculated and after Clear All.