If it takes 5 minutes to cut a piece of wood into 8 pieces, how many minutes will it take to finish sawing the piece of wood?
把一根木头锯成8段，每锯断一次需要5分钟，锯完这根木头一共需要多少分钟．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<result>35</result>