A cuboid-shaped container is 4 decimeters long, 3 decimeters wide, and 4.5 decimeters high. Pour 30 liters of water into this container, how deep is the water in the container?
一个长方体形状的容器，里面长4分米，宽3分米，高4.5分米．向这个容器里注入30升水，容器里水深多少分米？
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">30 / 12</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>