A rectangular block of wood is 30 cm long, 20 cm wide, and 25 cm high. After cutting off the largest cube from this block, what is the volume of the remaining part in cubic centimeters?
一个长方体木块长30厘米，宽20厘米，高25厘米，在这个木块上截下一个最大的正方体后，剩下部分的体积是多少立方厘米．
<gadget id="calculator">30 * 20 * 25</gadget>
<output>15_000</output>

<gadget id="calculator">20 ** 3</gadget>
<output>8_000</output>

<gadget id="calculator">15_000 - 8_000</gadget>
<output>7_000</output>

<result>7_000</result>