A cuboid glass container, measured from the inside, is 3dm in length and 2dm in width. Introduce 7.5 liters of water into the container, and then put an iron block into the water (the iron block is completely immersed in the water). The water depth in the container measured at this time is 13.5cm. What is the volume of this iron block?
一个长方体玻璃容器，从里面量长为3dm，宽为2dm，向容器导入7.5升水，再把一个铁块放入水中(铁块完全浸入水中)，这时量的容器内的水深13.5cm．这个铁块的体积是多少？
<gadget id="calculator">13.5 / 10</gadget>
<output>1.35</output>

<gadget id="calculator">3 * 2 * 1.35</gadget>
<output>8.1</output>

<gadget id="calculator">8.1 - 7.5</gadget>
<output>0.6</output>

<result>0.6</result>