In a water basin with a length of 60 cm, a width of 40 cm, and a height of 50 cm, put a cuboid iron block so that the water level rises by 2 cm compared to the original one. It is known that the length and width of the iron block are both 20 cm. What is the height of the iron block in centimeters? ?
在一只长60厘米，宽40cm，高50cm水盆里，放入一块长方体铁块，这样水面比原来上升2厘米，已知铁块的长和宽都是20cm，铁块的高是多少厘米？
<gadget id="calculator">60 * 40 * 2</gadget>
<output>4_800</output>

<gadget id="calculator">20 * 20</gadget>
<output>400</output>

<gadget id="calculator">4_800 / 400</gadget>
<output>12</output>

<result>12</result>