A bamboo pole inserted into the water has a total length of 3.6 meters. The part above the water and the part inserted into the soil are 1.9 meters in total. How deep is the water?
一根插入水中的竹竿全长3.6米，露出水面的部分和插入泥土部分共1.9米，水深多少米？
<gadget id="calculator">3.6 - 1.9</gadget>
<output>1.7</output>

<result>1.7</result>