A trapezoidal steel plate has an upper base of 1.2 meters, a lower base of 2 meters, and a height of 1.1 meters. If the steel plate weighs 25 kg per square meter, how many kilograms does this steel plate weigh?
一块梯形钢板，上底1.2米，下底2米，高1.1米，如果每平方米钢板重25千克，这块钢板重多少千克？
<gadget id="calculator">1.2 + 2</gadget>
<output>3.2</output>

<gadget id="calculator">1.1 / 2</gadget>
<output>0.55</output>

<gadget id="calculator">3.2 * 0.55 * 25</gadget>
<output>44</output>

<result>44</result>