A 3-meter-long bamboo pole is inserted into the soil. The part exposed to the ground is 2.4 meters long. How many meters is the part inserted into the soil?
把一根3米长的竹竿插入土中，露出地面的部分长2.4米，插入土中的部分长多少米？
<gadget id="calculator">3 - 2.4</gadget>
<output>0.6</output>

<result>0.6</result>