Master Wang sawed a piece of wood into 7 sections, and it took 4 minutes at a time. How many minutes did it take in total?
王师傅将一截木头锯成7段，一次花了4分钟，一共花了多少分钟．
<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<result>24</result>