A rope is 8 meters long, cut off (1/4), how many meters are left.
一根绳子长8米，剪去它的(1/4)，余下多少米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">8 * (1/4)</gadget>
<output>2</output>

<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<result>6</result>