A cuboid swimming pool is 50 meters long, 25 meters wide and 2 meters deep. To paste square tiles with a side length of 5 decimeters on the four walls and the bottom of the swimming pool, how many tiles are needed at least?
一个长方体游泳池长50米，宽25米，池深2米．要在游泳池内四壁和池底贴上边长为5分米的正方形瓷砖，至少需要这种瓷砖多少块？
<gadget id="calculator">1_250 / 0.25</gadget>
<output>5_000</output>

<gadget id="calculator">5_000 * 10</gadget>
<output>50_000</output>

<result>50_000</result>