A new swimming pool with a length of 50 meters, a width of 25 meters and a depth of 2 meters has been newly built in the swimming center. Now it is necessary to paste tiles around the swimming pool and on the bottom surface. How many square meters of tiles are needed in total?
游泳中心新建了一个长50米，宽25米，深2米的游泳池，现在要在游泳池四周和底面贴上瓷砖，一共需要贴多少平方米的瓷砖？
<gadget id="calculator">50 * 25</gadget>
<output>1_250</output>

<gadget id="calculator">50 * 2 * 2</gadget>
<output>200</output>

<gadget id="calculator">25 * 2 * 2</gadget>
<output>100</output>

<gadget id="calculator">1_250 + 200 + 100</gadget>
<output>1_550</output>

<result>1_550</result>