parallelogram steel plate has a base of 8 meters and twice its height. If the steel plate weighs 25 kg per square meter, how many kilograms does this steel plate weigh?
一块平行四边形钢板，底是8米，是高的2倍，如果每平方米钢板重25千克，则这块钢板重多少千克？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">8 * 4 * 25</gadget>
<output>800</output>

<result>800</result>