A parallelogram steel plate has a base of 6 meters and a height of 2 meters. If the steel plate weighs 13 kg per square meter, how much does the steel plate weigh?
一块平行四边形钢板，底是6米，高是2米，如果每平方米钢板重13千克，这块钢板重多少千克．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">13 * 12</gadget>
<output>156</output>

<result>156</result>