Put a square iron block with a side length of 2 decimeters into a rectangular FRP with a length of 80 cm and a width of 50 cm. If the iron block is completely submerged in the water, how many centimeters will the water level in the tank rise?
在一个长80厘米、宽50厘米的长方体玻璃钢里放入一个棱长为2分米的正方体铁块，铁块完全没入水中，水缸里的水面会上升多少厘米？
<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">20 * 20 * 20</gadget>
<output>8_000</output>

<gadget id="calculator">80 * 50</gadget>
<output>4_000</output>

<gadget id="calculator">8_000 / 4_000</gadget>
<output>2</output>

<result>2</result>