The length, width and height of a closed water tank are 8dm, 5dm and 2dm respectively, and the depth of water in the tank is 1.5dm. If all the water in this water tank is poured into another water tank whose length, width, and height are 2dm, 4dm, and 9dm respectively, how many decimeters is the water depth at this time?
一个封闭的水箱的长、宽、高分别是8dm、5dm、2dm，箱内水深1.5dm．如果把这个水箱中的水全部倒入另一个长、宽、高分别是2dm、4dm、9dm的水箱，这时水深多少分米？
<gadget id="calculator">1.5 / 2 / 4</gadget>
<output>0.1875</output>

<gadget id="calculator">8 * 5 * 0.1875</gadget>
<output>7.5</output>

<result>7.5</result>