A new swimming pool has been built in the sports center, which is 50 meters long, 20 meters wide and 2.5 meters deep. There are tiles all around and on the bottom of the swimming pool. What is the area of the tiles?
体育运动中心新建了一个游泳池，这个游泳池长50米，宽20米，深2.5米．在游泳池的四周和底面上都贴有瓷砖，贴瓷砖的面积是多少？
<gadget id="calculator">50 * 20</gadget>
<output>1_000</output>

<gadget id="calculator">50 * 2.5 * 2</gadget>
<output>250</output>

<gadget id="calculator">20 * 2.5 * 2</gadget>
<output>100</output>

<gadget id="calculator">1_000 + 250 + 100</gadget>
<output>1_350</output>

<result>1_350</result>