It takes 6 minutes for Master Zhang to saw a piece of wood into 3 sections. How many minutes would it take to saw it into 8 sections?
张师傅把一根木头锯成3段需要6分钟．如果把它锯成8段需要多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">3 * 7</gadget>
<output>21</output>

<result>21</result>