It takes 4 minutes to divide a 2-meter-long wooden stick into 4 decimeters, how long does it take to divide it into 5 decimeters?
一段长2米的木棒，分成每小段4分米要4分钟，那么分成每小段5分米要多长时间？
<gadget id="calculator">10 / 5</gadget>
<output>2</output>

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

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

<gadget id="calculator">2 * (5/2)</gadget>
<output>5</output>

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

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

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">3 * 1</gadget>
<output>3</output>

<result>3</result>