There is a parallelogram iron plate with a base of 3 meters and a height of 2.5 meters. If the iron plate weighs 15 kg per square meter. How much does this iron plate weigh in total?
有一块平行四边形的铁板，底是3米，高是2.5米，如果每平方米铁板重15千克．这块铁板共重多少千克？
<gadget id="calculator">3 * 2.5 * 15</gadget>
<output>112.5</output>

<result>112.5</result>