A section of cuboid steel is 150 decimeters long and has a cross-sectional area of 16 square decimeters. The steel weighs 78 grams per cubic decimeter. How much does this square steel weigh?
一段长方体钢材，长150分米，横截面的面积是16平方分米．每立方分米钢重78克，这块方钢重多少？
<gadget id="calculator">240 * 78</gadget>
<output>18_720</output>

<result>18_720</result>