After folding a 4 decimeter rope in half three times, how long is each piece of rope?
把4分米的绳子对折三次后，每段绳子有多长？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">4 * (1/8)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>