The monkey mother brought a very long wooden strip and wanted to saw it into 4 sections. The mother monkey asked the little monkey: If it takes 2 minutes to saw a piece of wood, it will take at least (how many) minutes to finish sawing this piece of wood.
猴子妈妈拿来一根很长的木条，要把它锯成4段．猴妈妈问小猴子：如果锯开一处需要2分钟，锯完这根木条最少只用(多少)分钟．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

<result>6</result>