Fold a piece of iron wire in half continuously 3 times, what is the total length of each piece
把一根铁丝连续对折3次，每段是全长的多少
<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>