A rectangular steel plate is 18 meters long and 10 meters wide. This steel plate weighs 45kg per square meter. How heavy is this steel plate?
一块长方形的钢板长18米，宽10米，这种钢板每平方米重45kg，这块钢板有多重？
<gadget id="calculator">18 * 10 * 45</gadget>
<output>8_100</output>

<result>8_100</result>