In a water tank with a length of 24 decimeters, a width of 9 decimeters, and a height of 8 decimeters, pour 4 decimeters of water into it, and then put a cube iron block with a side length of 6 decimeters, how much will the water level rise?
在一个长24分米，宽9分米，高8分米的水箱中，注入4分米深的水，然后放入一个棱长为6分米的正方体铁块，那么水面会升高多少？
<gadget id="calculator">4.8 - 4</gadget>
<output>0.8</output>

<result>0.8</result>