If it takes 6 minutes to cut a stick into 4 pieces, how many minutes will it take to cut the stick into 6 pieces?
把一根木棒截成4段用时6分钟，那么把这根木棒一共截成6段还需要多少分钟．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

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

<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<result>4</result>