Class 31 carried out the activity of reading a book together. Xiaoli reads 18 pages every day and finishes reading in 6 days. Xiaoqiang finished reading in 9 days, how many pages does Xiaoqiang read on average every day?
三一班开展同读一本书活动．小丽每天读18页，6天读完．小强9天读完，小强平均每天读多少页？
<gadget id="calculator">6 / 9</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">18 * (2/3)</gadget>
<output>12</output>

<result>12</result>