A bamboo pole is 2 meters above the surface of the water, the part in the mud accounts for (2/5) of the total length, and the part in the water is 1 meter longer than the part in the mud. How many meters is the total length of the bamboo pole?
一根竹竿露出水面2米，泥中部分占全长的(2/5)，水中部分比泥中部分多1米，这根竹竿全长多少米？
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3 / (1/5)</gadget>
<output>15</output>

<result>15</result>