stone is submerged in a cube container with a side length of 4 decimeters, and the height of the water surface rises from 24 centimeters to 31 centimeters. What is the volume of the stone in cubic decimeters?
把一块石头浸没在一个棱长为4分米的正方体容器里，水面的高度由24厘米上升到31厘米，这块石头的体积是多少立方分米？
<gadget id="calculator">31 - 24</gadget>
<output>7</output>

<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">4 * 4 * (7/10)</gadget>
<output>56/5 = around 11.2</output>

<result>56/5 = around 11.2</result>