I just need help with the last part.

Exercise 11-9 Maria Garza's regular hourly wage rate is $13.00, and she receives a wage of 1% times the regular hourly rate for work in excess of 40 hours. During a March weekly pay period, Maria worked 47 hours. Her gross eamings prior to the current week were $6,800. Maria is married and claims three withholding allowances. Her only voluntary deduction is for group hospitalization insurance at $20 per week. MARRIED Persons-WEEKLY Payroll Period For Wages Paid through December 2017) If the wages are- And the number of allowances claimed is_ But less 0123 45 678 9 10 At least than The amount of incometax to be withheld is-_ 510 34 27 19 1140 0 00 00 520 35 28 20 12 5 0 00 0 00 530 37 29 21 13 6 0 00 0 00 540 38 30 22 147 0 0 000 0 550 40 31 23 15 8 0 0 000 0 510 560 41 32 24 16 9 1 00 0 00 570 43 33 25 17 10 2 0 000 0 580 44 34 26 181 590 46 35 27 19 12 4 00 0 00 590 600 47 36 28 20 13 5 00 0 00 600 610 49 38 29 21 14 610 000 0 0 620 50 39 30 22 15 7 00 0 00 630 52 41 31 23 16 8 100 00 640 53 42 32 2417 650 55 44 33 25 18 10 300 00 2 0 660 56 45 3426 19 11 000 0 670 680 59 48 37 28 21 13 0 0 00 690 61 50 38 29 22 14 70 0 00 58 47 35 27 20 12 5 0 670 690 700 62 51 40 30 23 158 0 00