Divide the 5-meter-long iron wire into 8 sections on average, and 3 sections account for the total length ((())/(())).
把5米长的铁丝平均分成8段，3段占全长的((())/(()))．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 3</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>