A mirror is 18 decimeters long and 7 decimeters wide. The price per square decimeter is 6 yuan. How much does this mirror cost?
一面镜子长18分米，宽7分米，每平方分米的价格是6元，这面镜子需要多少元？
<gadget id="calculator">18 * 7 * 6</gadget>
<output>756</output>

<result>756</result>