A cuboid container is 25cm long, 18cm wide, and the depth of water inside is 6cm. Put a watermelon into the water (the melon is completely submerged in water), and the water rises by 4cm. What is the volume of this watermelon?
一个长方体容器长25cm，宽18cm，里面的水深6cm，将一个西瓜，放入水中，(瓜完全被水淹没)，水上升了4cm，这个西瓜的体积是多少？
<gadget id="calculator">25 * 18 * 4</gadget>
<output>1_800</output>

<result>1_800</result>