Additional question: If a cuboid water tank with a length of 48 cm, a width of 25 cm, and a height of 20 cm is filled with water at a depth of 15 cm, and a cube iron block with a side length of 12 cm is sunk into the water, how many centimeters will the water level in the tank rise to?
附加题：在一个长48cm、宽25cm、高20cm的长方体水箱中注入15cm深的水，把一个棱长为12cm的正方体铁块沉入水中，则水箱内的水面将上升到几厘米？
<gadget id="calculator">48 * 25</gadget>
<output>1_200</output>

<gadget id="calculator">12 / 1_200</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">12 * 12 * (1/100)</gadget>
<output>36/25 = around 1.44</output>

<gadget id="calculator">(36/25) + 15</gadget>
<output>411/25 = around 16.44</output>

<result>411/25 = around 16.44</result>