cuboid glass container is 20 cm long, 15 cm wide, and 18 cm high. After pouring 3000 ml of water into the container and completely submerging an iron block in the water, the water depth is 12 cm. What is the volume of the iron block in cubic centimeters?
一个长方体玻璃容器，长20厘米，宽15厘米，高18厘米，向容器内倒入3000毫升水后，将一铁块完全浸入水中后，此时水深为12厘米．铁块的体积是多少立方厘米？
<gadget id="calculator">20 * 15 * 12</gadget>
<output>3_600</output>

<gadget id="calculator">3_600 - 3_000</gadget>
<output>600</output>

<result>600</result>