A steel ball is submerged in a cuboid container whose length and width are 12 cm and 10 cm respectively, and the water level rises from 8 cm to 10.5 cm (the water does not overflow). Find the volume of the steel ball.
把一个钢球浸没在长、宽分别为12厘米和10厘米的长方体容器里，水面由原来的8厘米升高到10.5厘米(水不溢出)．求钢球的体积．
<gadget id="calculator">10.5 - 8</gadget>
<output>2.5</output>

<gadget id="calculator">12 * 10 * 2.5</gadget>
<output>300</output>

<result>300</result>