Divide a 4-meter-long iron wire into 5 parts on average, how much does each part take up in the total length
把一根4米长的铁丝平均分成5份，每份占全长的多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>