There are two cuboid tanks without a cover, the A tank is full of water, and the B tank is empty. Measured from the inside, tank A is 40 cm long, 32 cm wide, and 20 cm high above the water surface; tank B is 30 cm long, 24 cm wide, and 25 cm deep. Pour part of the water in tank A into tank B so that the water levels in the two tanks are the same. How many centimeters is the water level now?
有两个无盖的长方体水箱，甲水箱里有水，乙水箱空着．从里面量，甲水箱长40厘米，宽32厘米，水面高20厘米；乙水箱长30厘米，宽24厘米，深25厘米．将甲水箱中部分水倒入乙水箱，使两箱水面高度一样，现在水面高多少厘米？
<gadget id="calculator">40 * 32</gadget>
<output>1_280</output>

<gadget id="calculator">30 * 24</gadget>
<output>720</output>

<gadget id="calculator">1_280 + 720</gadget>
<output>2_000</output>

<gadget id="calculator">20 / 2_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">40 * 32 * (1/100)</gadget>
<output>64/5 = around 12.8</output>

<result>64/5 = around 12.8</result>