Divide the 5-meter-long steel material into 7 sections on average, how much is the length of each section in the total length
把5米长的钢材平均分成7段，每段长是全长的多少
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>