After Grandpa Zhang inserted a 5-meter-long bamboo pole into the water, the part that entered the soil was 0.8 meters, and the part that emerged from the water was 1.36 meters. How deep is the fish pond?
张爷爷用5米长的竹竿插入水中后，进入泥土部分是0.8米，露出水面是1.36米，鱼塘水深多少？
<gadget id="calculator">5 - 0.8 - 1.36</gadget>
<output>2.84</output>

<result>2.84</result>