A piece of wood is 2.1 meters long, and it is sawed into several small sections of 0.3 meters long, and the time for each section is 6 minutes. How many minutes will it take to saw all of them.
一根木料长2.1米，把它锯成0.3米长的若干小段，每锯一段的时间是6分钟．全部锯完，共用时多少分钟．
<gadget id="calculator">2.1 / 0.3</gadget>
<output>7</output>

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<result>36</result>