It took 3 minutes to saw a piece of wood into 3 sections. At this rate, how many minutes would it take to saw the piece of wood into 5 sections?
把一根木料锯成3段用了3分钟，照这样的速度，如果把这根木料锯成5段要用多少分钟．
<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">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">(3/2) * 4</gadget>
<output>6</output>

<result>6</result>