Runner Mills is a division of Iowa Woolen Products. For the most recent year, Runner had net income of $18,000,000. Included in income was interest expense of $1,260,000. The operations tax rate is 20 percent. Total assets of Runner Mills are $211,500,000, current liabilities are $46,800,000, and $32,400,000 of the current liabilities are noninterest bearing. Calculate NOPAT, invested capital, and ROI for Runner Mills. (Round ROI to 2 decimal places, e.g. 15.25.)

NOPAT		$19,008,000
Invested capital		$179,100,000
ROI		10.61%

Can someone please help me with the ROI portion of the question above? I keep getting 10.61%, and the NOPAT and Invested capital noted above are correct. What step am I missing, please help!