If it takes 2 minutes to cut a 5-meter-long steel bar into two pieces of the same length, how many minutes will it take to cut it into six pieces?
把5米长的钢筋锯成同样长的小段，如果锯成两段需2分钟，锯成6段共需多少分钟．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

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

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

<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<result>10</result>