The volume of a cuboid water tank is 200L. The bottom surface of this water tank is a square whose side length is 5dm**2. What is the height of the water tank?
一个长方体水箱的容积是200L，这个水箱的底面是一个边长为5dm**2正方形，水箱的高是多少．
<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">200 / 25</gadget>
<output>8</output>

<result>8</result>