There is a piece of wood that needs to be sawn into 8 sections. It takes 2 minutes to saw each section. How many minutes will it take to saw all of them?
有一根木头，要锯成8段，每锯开一段需要2分钟，全部锯完需要多少分钟．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<result>14</result>