A potato is completely submerged in a cube container with a side length of 20 cm filled with water, and the water in the container rises by 0.5 decimeters. What is the volume of this potato?
把一个土豆完全浸入一个装有水而且棱长是20厘米的正方体的容器里，容器里的水上升了0.5分米．这个土豆的体积是多少？
<gadget id="calculator">0.5 * 10</gadget>
<output>5</output>

<gadget id="calculator">20 * 20 * 5</gadget>
<output>2_000</output>

<result>2_000</result>