A cuboid pool has a bottom circumference of 40 meters. The known ratio of length, width, and height is 6:4:1. How deep is the pool in meters?
长方体水池，底周长40米，己知长、宽、高的比是6：4：1，水池深多少米．
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<gadget id="calculator">40 / 2 / 10</gadget>
<output>2</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<result>2</result>