A newly built swimming pool is 50 meters wide, twice as long as it is wide, and 2.5 meters deep. Now it is necessary to paste tiles around the swimming pool. How many square meters of tiles are needed in total?
一个新建的游泳池宽50米，长是宽的2倍，深2.5米，现在要在游泳池的四周贴上瓷砖，一共需要贴多少平方米的瓷砖？
<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<gadget id="calculator">50 * 25</gadget>
<output>1_250</output>

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

<gadget id="calculator">25 * 2.5 * 2</gadget>
<output>125</output>

<gadget id="calculator">1_250 + 250 + 125</gadget>
<output>1_625</output>

<result>1_625</result>