Put a 10cm square iron block in a water tank with a length of 25cm and a width of 20cm. The iron block is completely submerged in water (the water does not overflow). Question: How many centimeters will the water level rise?
在一个长25cm、宽20cm的水缸中放入一块棱长10cm的正方体铁块，铁块全部浸没在水中(水没有溢出来)．问：水面将会升高多少厘米？
<gadget id="calculator">25 * 20</gadget>
<output>500</output>

<gadget id="calculator">10 / 500</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">10 * 10 * (1/50)</gadget>
<output>2</output>

<result>2</result>