1 meter long iron wire is cut off (3/8) meter, how much longer is the rest than the cut off?
一根1米长的铁丝，截下(3/8)米，剩下的比截下的长多少米？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(5/8) - (3/8)</gadget>
<output>1/4 = around 0.25</output>

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