There is a cuboid wood whose volume is 540 cubic decimeters and whose cross-sectional area is 20 square decimeters. What is the length of this wood?
有一根长方体木料体积是540立方分米，它的截面面积是20平方分米，这根木料的长应是多少．
<gadget id="calculator">540 / 20</gadget>
<output>27</output>

<result>27</result>