A cube glass container, pour 5 liters of water into it, the water surface is 8 cm high, and then put a stone into the water, then measure the water depth in the container to be 15 cm. Find the volume of the stone.
一个正方体玻璃容器，往里面倒入5升的水，水面高8厘米，再把一块石头放入水中，这时量得容器内的水深15厘米．求石头的体积．
<gadget id="calculator">1_000 / 8</gadget>
<output>125</output>

<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<gadget id="calculator">5 * 125 * 7</gadget>
<output>4_375</output>

<result>4_375</result>