cuboid container whose length, width, and height are 30cm, 15cm, and 8cm respectively. Pour the water inside into a cube container whose side length is 20cm. How deep is the water? (Container thickness is ignored.)
一个长方体容器，长、宽、高分别是30cm、15cm、8cm，把里面的水倒入一个棱长是20cm的正方体容器里，水深多少？(容器厚度忽略不计．)
<gadget id="calculator">20 * 20</gadget>
<output>400</output>

<gadget id="calculator">8 / 400</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">30 * 15 * (1/50)</gadget>
<output>9</output>

<result>9</result>