If you want to plaster the perimeter and bottom of a swimming pool with a length, width, and height of 120 meters, 80 meters, and a depth of 3 meters, how many square meters is the area to be plastered with cement?
要在一个长、宽、高分别是120米，80米，深3米的游泳池的四周和底面抹上水泥，抹水泥的面积是多少平方米？
<gadget id="calculator">120 * 80</gadget>
<output>9_600</output>

<gadget id="calculator">120 * 3 * 2</gadget>
<output>720</output>

<gadget id="calculator">80 * 3 * 2</gadget>
<output>480</output>

<gadget id="calculator">9_600 + 720 + 480</gadget>
<output>10_800</output>

<result>10_800</result>