It took 10 minutes to saw a piece of wood into 5 sections, how many minutes would it take to saw it into 10 sections?
把一根木料锯成5段用了10分钟，按这样算，锯成10段需要多少分钟．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">10 / 4</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">(5/2) * 9</gadget>
<output>45/2 = around 22.5</output>

<result>45/2 = around 22.5</result>