The volume of a cuboid water tank is 300 liters. The bottom of the water tank is a square with a side length of 5 decimeters. What is the height of the water tank in decimeters?
一个长方体水箱的容积是300升，这个水箱底面是一个边长5分米的正方形，水箱的高是多少分米．
<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">300 / 25</gadget>
<output>12</output>

<result>12</result>