If a bamboo pole is inserted vertically into a pool with a depth of 4.8 meters, mark the junction of the bamboo pole and the water surface, take it out, then turn the bamboo pole upside down, and do it again according to the above method. If the distance between the two marks is the whole (1/5) of the length of the bamboo pole, so how long is the bamboo pole in meters?
如果一根竹竿竖直地插入深4.8米的水池中，在竹竿与水面的交接处注上记号后取出，然后将竹竿倒过来，依照上述方法再做一次，如果两个记号间的距离是整个竹竿长度的(1/5)，那么，竹竿长多少米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / (4/5)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">4.8 * (5/2)</gadget>
<output>12</output>

<result>12</result>