Obviously, a 5.4-meter bamboo pole is inserted into the pool water to measure the depth of the pool water. It is known that the part inserted into the mud is 0.6 meters long, and the part exposed to the water is 1.23 meters long. How deep is the water in meters?
明明将一根5.4米的竹竿插入池水中，来测池水的深度，已知插入泥的部分长0.6米，露出水面的部分长1.23米，水深多少米？
<gadget id="calculator">5.4 - 0.6 - 1.23</gadget>
<output>3.57</output>

<result>3.57</result>