A swimming pool is 25m long, 15m wide, and 2m deep. How many tiles are needed to paste the four walls and the bottom with square tiles with an area of 4dm**2?
一个游泳池，长25m，宽15m，深2m，将四壁和底面用面积是4dm**2的正方形瓷砖贴上，需要多少块？
<gadget id="calculator">25 * 15</gadget>
<output>375</output>

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

<gadget id="calculator">15 * 2 * 2</gadget>
<output>60</output>

<gadget id="calculator">375 + 100 + 60</gadget>
<output>535</output>

<gadget id="calculator">535 / 0.04</gadget>
<output>13_375</output>

<result>13_375</result>