Pour 60 liters of water into a rectangular water tank with a length of 6 decimeters and a width of 2.5 decimeters, and it is just full. What is the depth of the water tank in centimeters?
把60升水倒入一个长6分米，宽2.5分米的长方形水箱内，正好倒满，这个水箱深是多少厘米．
<gadget id="calculator">6 * 2.5</gadget>
<output>15</output>

<gadget id="calculator">60 / 15</gadget>
<output>4</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<result>40</result>