A piece of cardboard with a length of 60 cm and a width of 40 cm is folded into a rectangular box without a cover after cutting off four squares with a side length of 6 cm from the four corners. What is the volume of the rectangular box in cubic centimeters?
一张长60厘米，宽40厘米的硬纸板，从四个角剪去四个边长为6厘米的正方形后，折成一个无盖的长方体纸盒，长方体纸盒的体积是多少立方厘米？
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">60 - 12</gadget>
<output>48</output>

<gadget id="calculator">40 - 12</gadget>
<output>28</output>

<gadget id="calculator">48 * 28 * 6</gadget>
<output>8_064</output>

<result>8_064</result>