A rectangular parallelepiped container is 30cm long, 20cm wide, and 7cm deep. When a piece of iron is put into the water, the water level rises 4cm. What is the volume of the piece of iron in cubic centimeters?
一个长方体容器长30cm，宽20cm，水深7cm，将一铁块放入水后，水面上升4cm，这块铁的体积多少立方厘米？
<gadget id="calculator">30 * 20 * 4</gadget>
<output>2_400</output>

<result>2_400</result>