A cube glass container has a side length of 4 decimeters. Pour 32 liters of water into the container, and then put a stone into the water. At this time, the water depth in the container is measured to be 22.5 cm. What is the volume of the stone?
一个正方体玻璃容器棱长4分米，向容器中倒入32升水，再把一块石头放入水中，这时量得容器内的水深22.5厘米，石头的体积是多少？
<gadget id="calculator">22.5 / 10</gadget>
<output>2.25</output>

<gadget id="calculator">4 * 4 * 2.25</gadget>
<output>36</output>

<gadget id="calculator">36 - 32</gadget>
<output>4</output>

<result>4</result>