A bamboo pole with a length of 4.7 meters is vertically inserted into a pond. The part of the bamboo pole that enters the mud is 0.6 meters, and the part that is out of the water is 0.8 meters. How deep is the pond?
一根竹竿长4.7米，垂直插入水塘中，竹竿的入泥部分是0.6米，露出水面的部分是0.8米．水塘深多少米？
<gadget id="calculator">4.7 - 0.6 - 0.8</gadget>
<output>3.3</output>

<result>3.3</result>