A new swimming pool in the fitness center is 50 meters long, 25 meters wide and 1.5 meters deep. How many square meters of tiles are needed to paste tiles around and on the bottom of the swimming pool?
健身中心新建一个游泳池，该游泳池的长50米，宽25米，深1.5米．现要在游泳池的四周和底面都贴上瓷砖，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 * 1.5</gadget>
<output>75</output>

<gadget id="calculator">25 * 1.5</gadget>
<output>37.5</output>

<gadget id="calculator">75 + 37.5</gadget>
<output>112.5</output>

<gadget id="calculator">112.5 * 2</gadget>
<output>225</output>

<gadget id="calculator">1_250 + 225</gadget>
<output>1_475</output>

<result>1_475</result>