It takes (2/7) minutes to saw a small stick into 3 sections, how many minutes will it take to cut it into 5 sections
一根小棒锯成3段需要(2/7)分钟，如果截成5段需要多少分钟
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">(2/7) / 2</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">(1/7) * 4</gadget>
<output>4/7 = around 0.571429</output>

<result>4/7 = around 0.571429</result>