25 is more than 20 ((())/(())), which is more than how many kilometers (1/4) is 30 kilometers.
25比20多((())/(()))，比多少千米多(1/4)是30千米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">30 / (5/4)</gadget>
<output>24</output>

<result>24</result>