A cuboid container measures 20 cm in length, 15 cm in width, and 18 cm in height. Now this container is filled with some water, and the water depth is 8 cm. What is the depth of water in the container?
一个长方体容器从里面量长是20厘米，宽是15厘米、高是18厘米，现在这个容器中装了一些水，水深8厘米，如果在水中沉入一个棱长6厘米的正方体铁块，这时容器里的水深为多少厘米？
<gadget id="calculator">20 * 15</gadget>
<output>300</output>

<gadget id="calculator">6 / 300</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">6 * 6 * (1/50)</gadget>
<output>18/25 = around 0.72</output>

<gadget id="calculator">8 + (18/25)</gadget>
<output>218/25 = around 8.72</output>

<result>218/25 = around 8.72</result>