The stage background for the June 1 performance is a rectangular cloth with a length of 6 meters and a width of 4 meters. The cloth costs 3 yuan per square decimeter. Please calculate how much this cloth costs?
六一会演布置舞台背景，背景是一个长6米，宽4米的长方形布，每平方分米布3元，请算一算这块布需要多少钱？
<gadget id="calculator">6 * 4 * 100 * 3</gadget>
<output>7_200</output>

<result>7_200</result>