After a rope is folded in half three times, what is the length of the rope obtained in 1 small piece.
一根绳子对折三次后，得到的1小段是这根绳子的多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2) * (1/2)</gadget>
<output>1/8 = around 0.125</output>

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