A cuboid square steel with a length of 1.5 meters and a cross-sectional area of 4 square decimeters, what is the volume of this square steel?
一根长1.5米的长方体方钢，横截面面积4平方分米，这根方钢体积是多少．
<gadget id="calculator">1.5 * 10</gadget>
<output>15</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>