A cuboid fish tank is filled with 64L of water. Now pour this water into a square bucket with a side length of 4dm. How deep is the water in the bucket?
一个长方体的鱼缸里装满水是64L，现在把这些水倒入棱长是4dm的正方形水桶中，则水桶中的水有多深．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">64 / 16</gadget>
<output>4</output>

<result>4</result>