Divide an 8-meter piece of wood into 4 sections on average, and each section needs 6 minutes. How long will it take to complete the section?
把一根8米的木头平均分成4段，每据一段需要6分钟，据完一共要花多少时间？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>