There is a rectangular cardboard with a length of 8 cm and a width of 4 cm. Cut a square with a side length of 1 cm from each of the four corners, and then fold it into a cuboid carton without a cover. What is the volume of this carton in cubic centimeters?
有一张长8厘米、宽4厘米的长方形硬纸板，从四个角各剪去一个边长是1厘米的正方形，再折成一个无盖的长方体纸盒．这个纸盒的容积是多少立方厘米？
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<gadget id="calculator">4 - 2</gadget>
<output>2</output>

<gadget id="calculator">6 * 2 * 1</gadget>
<output>12</output>

<result>12</result>