A sink is 40 cm long, 30 cm wide, and 20 cm deep. To put 12 liters of water in it, how high should the water be?
一个洗碗池，从里面量长40厘米，宽30厘米，深20厘米．要在里面放12升的水，水面应该高多少厘米？
<gadget id="calculator">40 * 30</gadget>
<output>1_200</output>

<gadget id="calculator">1_000 / 1_200</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">12 * (5/6)</gadget>
<output>10</output>

<result>10</result>