Divide a 3-meter-long rope into 7 sections on average, and each section occupies ((())/(())) of the rope. What is the length of the 2 sections?
把一根长3米的绳子，平均分成7段，每段占这根绳子的((())/(()))，2段绳子长多少米．
<gadget id="calculator">7 / 1</gadget>
<output>7</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<result>6/7 = around 0.857143</result>