If it takes 3 minutes to saw a piece of wood into 3 sections, how many minutes will it take to saw it into 8 sections?
把一根木料锯成3段要3分钟，锯成8段要多少分钟．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

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

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">7 * (3/2)</gadget>
<output>21/2 = around 10.5</output>

<result>21/2 = around 10.5</result>