The Xingfu community wants to build a swimming pool with a length of 50 meters, a width of 20 meters and a depth of 3 meters. The four walls and the bottom of the swimming pool are to be tiled. How many square meters is the tiled area?
幸福小区要修建一个长50米，宽20米，深3米的游泳池，要在游泳池的四壁和底面贴瓷砖，贴瓷砖的面积是多少平方米？
<gadget id="calculator">50 * 20</gadget>
<output>1_000</output>

<gadget id="calculator">50 * 3 * 2</gadget>
<output>300</output>

<gadget id="calculator">20 * 3 * 2</gadget>
<output>120</output>

<gadget id="calculator">1_000 + 300 + 120</gadget>
<output>1_420</output>

<result>1_420</result>