Divide a 3-meter-long rope into 7 equal parts, and the length of each part is the total length.
把3米长的绳子平均分成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>