A rectangular parallelepiped glass container whose length, width, and height are measured from the inside is 2dm. Pour 5.5L of water into the container, and then put an iron block into it. The iron block is completely submerged in the water. The water depth in the container is measured to be 18cm. What is the volume of this iron block?
一个长方体玻璃容器，从里面量长、宽、高均为2dm，向容器中倒入5.5L水，再投入一块铁块，铁块完全浸入水中，这时量得容器内的水深是18cm．这个铁块的体积是多少？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">5.5 / 4</gadget>
<output>1.375</output>

<gadget id="calculator">1.375 * 10</gadget>
<output>13.75</output>

<gadget id="calculator">18 - 13.75</gadget>
<output>4.25</output>

<gadget id="calculator">4.25 / 10</gadget>
<output>0.425</output>

<gadget id="calculator">0.425 * 4</gadget>
<output>1.7</output>

<result>1.7</result>