Submerge a cuboid metal block in a cuboid tank with a length of 40 cm and a width of 25 cm. At this time, the height of the water surface in the sink is 20 cm. After the metal block is taken out, the height of the water surface drops to 16 cm. It is known that the metal block is 25 cm long and 16 cm wide. What is the height in cm?
在一个长40厘米、宽25厘米的长方体水槽中浸没一个长方体金属块，这时水糟中水面的高度是20厘米，把金属块取出后，水面高度降低到16厘米．已知金属块长25厘米，宽16厘米，高是多少厘米？
<gadget id="calculator">20 - 16</gadget>
<output>4</output>

<gadget id="calculator">25 * 16</gadget>
<output>400</output>

<gadget id="calculator">4 / 400</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">40 * 25 * (1/100)</gadget>
<output>10</output>

<result>10</result>