A swimming pool is 24m 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 4 square decimeters?
一个游泳池，长24m，宽15m，深2m，将四壁和底面用面积是4平方分米的正方形瓷砖贴上，需要多少块？
<gadget id="calculator">24 * 15</gadget>
<output>360</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<gadget id="calculator">360 + 48 + 30</gadget>
<output>438</output>

<gadget id="calculator">438 * 2</gadget>
<output>876</output>

<gadget id="calculator">876 - 360</gadget>
<output>516</output>

<gadget id="calculator">516 / 0.04</gadget>
<output>12_900</output>

<result>12_900</result>