Xiaohong and Xiaogang read the same book. Xiaohong reads 12 pages a day and finishes reading in 6 days. Xiaogang reads 9 pages a day, how many days can he finish reading?
小红和小刚读同样一本书．小红每天读12页，6天读完．小刚每天读9页，几天能读完？
<gadget id="calculator">6 / 9</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 * (2/3)</gadget>
<output>8</output>

<result>8</result>