Xiao Ming uses a bamboo pole to measure the depth of the pool. The part of the bamboo pole above the water accounts for (1/3) of the total length. How many meters is the bamboo pole long?
小明用一根竹竿测量水池的深度，竹竿露出水面的部分占全长的(1/3)；水面上涨2m后，又测得竹竿水下部分占全长的(8/9)．竹竿长几米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 - (8/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/3) - (1/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">2 / (2/9)</gadget>
<output>9</output>

<result>9</result>