Divide (6/7) meters of iron wire into 5 sections on average, use up two sections, how many meters are left?
把(6/7)米的铁丝平均分成5段，用去两段，还剩多少米？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">(6/7) / 5</gadget>
<output>6/35 = around 0.171429</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">(6/35) * 3</gadget>
<output>18/35 = around 0.514286</output>

<result>18/35 = around 0.514286</result>