I am not sure what I am supposed to do. Can you please help me with the calculation?

E X H | B IT 13.3 Earned Income Credit and Phaseout Percentages Tax Number of Earned Income Credit Maximum Phaseout Phaseout Phaseout Ends Year Qualifying Children Base Amount Percentage Credit Base Percentage at Income of 2017 Married, Filing Jointly No children $ 6,670 7.65 $ 510 $13,930 7.65 $20,600 One child 10,000 34.00 3,400 23,930 15.98 45,207 Two children 14,040 40.00 5,616 23,930 21.06 50,597 Three or more children 14,040 45.00 6,318 23,930 21.06 53,930 Other Taxpayers No children 5 6,670 7.65 $ 510 5 8,340 7.65 $15,010 One child 10,000 34.00 3,400 18,340 15.98 39,617 Two children 14,040 40.00 5,616 18,340 21.06 45,007 Three or more children 14,040 45.00 6,318 18,340 21.06 48,340 2016 Married, Filing Jointly No children 5 6,610 7.65 $ 506 $13,820 7.65 $20,430 One child 9,920 34.00 3,373 23,740 15.98 44,846 Two children 13,930 40.00 5,572 23,740 21.06 50,198 Three or more children 13,930 45.00 6,269 23,740 21.06 53,505 Other Taxpayers No children 5 6,610 7.65 $ 506 5 8,270 7.65 514,880 One child 9,920 34.00 3,373 18,190 15.98 39,296 Two children 13,930 40.00 5,572 18,190 21.06 44,648 Three or more children 13,930 45.00 6,269 18,190 21.06 47,955