Fold a rope in half 4 times, what fraction of the rope is each piece of rope?
把一根绳子对折4次，每段绳子占这根绳子的几分之几？
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>