A cube water tank is 4 decimeters long on each side and is filled with water. If this tank of water is poured into another cuboid water tank whose length is 0.8 meters and width is 25 centimeters, what is the water depth?
一个正方体的水箱，每边长4分米，装满了一箱水，如果把这一箱水倒入另一个长是0.8米，宽是25厘米的长方体水箱中，水深是多少？
<gadget id="calculator">25 / 10</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">0.8 * 10 * (5/2)</gadget>
<output>20</output>

<gadget id="calculator">4 / 20</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4 * 4 * (1/5)</gadget>
<output>16/5 = around 3.2</output>

<result>16/5 = around 3.2</result>