Insert a bamboo pole vertically into the bottom of the well. The bamboo pole is wet for 2.3m. Then turn the bamboo pole upside down and insert it into the bottom of the well. The twice wet part of the bamboo pole is 0.8m longer than half of it. How long is the bamboo pole in meters?
把一根竹竿竖直插入井底，竹竿湿了2.3m，然后把竹竿倒转过来插入井底，竹竿两次湿的部分比它的一半长0.8m，竹竿长多少米？
<gadget id="calculator">2.3 * 2</gadget>
<output>4.6</output>

<gadget id="calculator">4.6 - 0.8</gadget>
<output>3.8</output>

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

<gadget id="calculator">3.8 / (1/2)</gadget>
<output>7.6</output>

<result>7.6</result>