The posters produced by the students are 18 decimeters long and 12 decimeters wide. What is the area of the poster in square decimeters?
同学们出的墙报，长18分米、宽12分米．墙报的面积是多少平方分米？
<gadget id="calculator">18 * 12</gadget>
<output>216</output>

<result>216</result>