The length of a cuboid container is 5 decimeters, the width is 4 decimeters, and 45 liters of water are contained in it. How many decimeters is the water surface high?
一个长方体容器的长是5分米，宽是4分米，里面盛了45升水，水面高多少分米？
<gadget id="calculator">45 / 5 / 4</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>