A cuboid with a length of 21 cm, a width of 15 cm, and a height of 13 cm. Now cut a cube as large as possible from it, what is the volume of the cut part in cubic centimeters?
一个长21厘米，宽15厘米，高13厘米的长方体．现在从它上面切下一个尽可能大的正方体，削去部分的体积是多少立方厘米？
<gadget id="calculator">21 * 15 * 13</gadget>
<output>4_095</output>

<gadget id="calculator">13 * 13 * 13</gadget>
<output>2_197</output>

<gadget id="calculator">4_095 - 2_197</gadget>
<output>1_898</output>

<result>1_898</result>