cuboid glass container, measured from the inside, is 7 decimeters in length, 3 decimeters in width, and 8 decimeters in height. When water is poured into this container, a set of opposite faces will appear for the first time in the cuboid formed by the water in the container. If it is a square, what is the volume of water in cubic decimeters?
一个长方体玻璃容器，从里面量，长是7分米，宽是3分米，高是8分米，向这个容器中注水，容器中的水所形成的长方体第一次出现一组相对的面是正方形时，水的体积是多少立方分米．
<gadget id="calculator">7 * 3 * 3</gadget>
<output>63</output>

<result>63</result>