Put a cuboid iron block with a length and width of 5 cm in a cuboid reservoir. If it is completely put into the water, the water level in the pool will rise by 9 cm. If the iron block in the water is exposed by 8 cm, this is At this time, the water level in the pool will drop by 4 cm. Question: What is the volume of this iron block in cubic centimeters?
在一个长方体蓄水池里放进一块长和宽都是5厘米的长方体铁块，如果把它全部放入水里，池里水面就上升9厘米，如果把水中的铁块露出8厘米，这时池里的水面就下降4厘米．问：这个铁块的体积是多少立方厘米？
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">2 * 9</gadget>
<output>18</output>

<gadget id="calculator">5 * 5 * 18</gadget>
<output>450</output>

<result>450</result>