It takes 1 minute for Master Zhang to saw wood into three sections. At this speed, how many minutes will it take to saw a piece of wood into five sections?
张师傅锯木头，锯成三段用1分钟，照这样的速度，把一根木头锯成五段，需要多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">(1/2) * 4</gadget>
<output>2</output>

<result>2</result>