It takes 6 minutes to saw a piece of wood into 4 sections, how much does it take to saw it into 8 sections?
一根木料锯成4段要6分钟，要锯成8段要多少．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<result>14</result>