A cuboid water tank can hold 80m*3 of water, and the bottom is a square with a side length of 4m. What is the height of the water tank in m?
一个长方体水箱，能装水80m**3，底面是边长为4m的正方形，水箱的高是多少m．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

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

<result>5</result>