Not sure what I am doing wrong, only have one check my work left. please help, thank you.

Example 3-1 In 20--, the annual salaries paid each of the officers of Abrew, Inc., follow. The officers are paid semimonthly on the 15th and the last day of the month. Compute the FICA taxes to be withheld from each officer's pay on (a) November 15 and (b) December 31. Round your answers to the nearest cent. If an amount is zero, enter "0". a. November 15 Annual OASDI Taxable Name and Title HI Taxable Salary Earnings OASDI Tax Earnings HI Tax Hanks, Timothy, President $163,650 $ 9,175 X $ 568.85 X $ 6,818.75 $ 98.87 Grath, John, VP Finance 143,520 5,980 370.76 5,980 86.71 James, Sally, VP Sales 73,200 3,050 189.10 3,050 44.23 Kimmel, Joan, VP Mfg. 54,000 2,250 139.50 2,250 32.63 Wie, Pam, VP Personnel 44,400 1,850 114.70 1,850 26.83 Grant, Mary, VP Secretary 46,800 1,950 120.90 1,950 28.28 b. December 31 Fraise Grath, John, VP Finance 145,520 5,900 370.70 James, Sally, VP Sales Reading 3,900 73,200 00.I 3,050 189.10 Kimmel, Joan, VP Mfg. 3,050 54,000 44.23 2,250 139.50 Wie, Pam, VP Personnel 2,250 32.63 44,400 1,850 114.70 Grant, Mary, VP Secretary 1,850 26.83 46,800 1,950 120.90 1,950 28.28 b. December 31 Annual OASDI Taxable Name and Title HI Taxable Salary Earnings OASDI Tax Earnings HI Tax Hanks, Timothy, President $163,650 $ 0 0 $ 6,818.75 $ 98.87 Grath, John, VP Finance 143,520 10,340 X 641.08 5,980 86.71 James, Sally, VP Sales 73,200 3,050 189.10 3,050 44.23 Kimmel, Joan, VP Mfg. 54,000 2,250 139.50 2,250 32.63 Wie, Pam, VP Personnel 44,400 1,850 114.70 1,850 26.83 Grant, Mary, VP Secretary 46,800 1,950 120.90 1,950 28.28