There are more story books than technology books (1/3), and how many technology books are story books
故事书比科技书多(1/3)，科技书是故事书的多少
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">1 / (4/3)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>