If it takes (1/30) hours to cut a steel bar into 2 sections, how many minutes will it take to cut this steel bar into 6 sections?
把一根钢筋截成2段需要(1/30)小时，那么要把这根钢筋截成6段需要多少分钟．
<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>