The book ratio of math books and story books is 5:6, how much more story books than math books
数学书和故事书的本书比是5：6，故事书比数学书多多少
<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>