12 classes of Hope Primary School participated in the "Chinese Dream, My Dream" painting exhibition. Each class selected 12 works. How many works were selected for the exhibition?
希望小学12个班参加"中国梦，我的梦"绘画作品展览，每个班选12幅作品，一共选出了多少幅作品参加展览？
<gadget id="calculator">12 * 12</gadget>
<output>144</output>

<result>144</result>