In the following summary of data for a payroll period, some amounts have been intentionally omitted: earnings: 1. at regular rate ? 2. at overtime rate $80,000 3. total earnings ? deductions: 4. social security tax 32,040 5. medicare tax 8,010 6. income tax withheld 136,000 7. medical insurance 18,400 8. union dues ? 9. total deductions 198,000 10. net amount paid 336,000 accounts debited: 11. factory wages 283,000 12. sales salaries ? 13. office salaries 106,800 a. calculate the amounts omitted in lines (1), (3), (8), and (12).