Cut a 1-meter-long iron wire into three sections, the first section is (3/8) meters long, and the second section is the same length as the first section. How long is the remaining section?
把一根1米长的铁丝剪成三段，第一段长(3/8)米，第二段与第一段同样长．剩下的一段长多少米？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/8) + (3/8)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>