If it takes 6 minutes to saw a log into 3 pieces, how many minutes will it take to saw the same log into 6 pieces?
把一根圆木锯成3段需要6分钟，把同样的圆木锯成6段需要多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>