There are 320 science books and 240 story books in the library, and there are more science books than stories ((())/(())).
图书馆有320本科技书，240本故事书，科技书比故事数多((())/(()))．
<gadget id="calculator">320 - 240</gadget>
<output>80</output>

<gadget id="calculator">80 / 240</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>