cuboid water tank can hold up to 80L of water. Measured from the inside, the bottom is a square with a side length of 4dm. What is the height of the water tank in decimeters?
一个长方体水箱最多能装水80L，从里面量，底面是边长4dm的正方形，那么这个水箱的高是多少分米．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">80 / 16</gadget>
<output>5</output>

<result>5</result>