There are more story books than literary books (3/8), and literary books are much less than story books.
故事书比文艺书多(3/8)，文艺书比故事书少多少．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 + (3/8)</gadget>
<output>11/8 = around 1.375</output>

<gadget id="calculator">(3/8) / (11/8)</gadget>
<output>3/11 = around 0.272727</output>

<result>3/11 = around 0.272727</result>