It took 30 minutes to saw a piece of wood into 6 sections. According to this calculation, how many minutes does it take to saw 3 sections.
把一根木料锯成6段，一共用了30分钟．照这样的计算，锯3段用多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">30 / 5</gadget>
<output>6</output>

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

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>