A cuboid square steel, the cross section is a square with a side length of 4 cm and a length of 2 decimeters, what is the volume in cubic centimeters?
一个长方体方钢，横截面是边长4厘米的正方形，长2分米，体积是多少立方厘米．
<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">4 * 4 * 20</gadget>
<output>320</output>

<result>320</result>