A steel pipe is 12 meters long, and 2 meters are cut every minute, how many minutes will it be finished?
一根钢管长12米，每分钟锯下2米，多少分钟锯完．
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">1 * 1</gadget>
<output>1</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<result>5</result>