A little monkey climbs a 2.6-meter-long bamboo pole. It climbs one meter and slides down 0.4 meters each time. How many times does it have to climb to the top?
小猴子爬一根2.6米长的竹竿，它每次爬一米滑下0.4米，要多少次爬到顶端．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<result>4</result>