It took 3 minutes to saw a piece of wood into 2 sections. At this speed, if the sawing took 18 minutes, how many sections were sawed in total?
把一根木头锯成2段用了3分钟，照这样的速度，如果锯18分钟，共锯几段？
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">18 / 3 / 1</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>