In a cuboid glass tank with a length of 25 cm, a width of 12 cm, and a height of 20 cm, a cube iron block with a side length of 9 cm is placed, and then filled with water. How many centimeters will the water in the jar drop when the iron block is removed from the water?
在一个长25厘米、宽12厘米、高20厘米的长方体玻璃缸中放入一个棱长9厘米的正方体铁块，然后加满水．当铁块从水中取出时，玻璃缸中的水会下降多少厘米？
<gadget id="calculator">25 * 12</gadget>
<output>300</output>

<gadget id="calculator">9 / 300</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">9 * 9 * (3/100)</gadget>
<output>243/100 = around 2.43</output>

<result>243/100 = around 2.43</result>