Sakura bought an extracurricular book at a discounted price of 40%, saving 6 yuan, so how much did she actually pay for the book?
小樱以6折的优惠价买了一本课外书籍，省了6元，那么她买书实际付了多少元．
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">6 / (2/5)</gadget>
<output>15</output>

<gadget id="calculator">15 - 6</gadget>
<output>9</output>

<result>9</result>