How many minutes will it take to saw a 5-meter-long wooden stick into 6 sections on average, and each section will take 2 minutes.
把5米长的木棒，平均锯成6段，每锯一段要2分钟，共需要多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

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

<result>10</result>