Dig a swimming pool 60 meters long, 20 meters wide, and 2 meters deep. Put cement on the bottom and four walls, what is the area of the cement?
挖一个长60米，宽20米，深2米的游泳池．在底部和四壁抹上水泥，抹水泥的面积是多少？
<gadget id="calculator">60 * 20</gadget>
<output>1_200</output>

<gadget id="calculator">60 * 2 * 2</gadget>
<output>240</output>

<gadget id="calculator">20 * 2 * 2</gadget>
<output>80</output>

<gadget id="calculator">1_200 + 240 + 80</gadget>
<output>1_520</output>

<result>1_520</result>