Square tiles are to be laid on the side of a square pool with a side length of 24 meters. Each side of this tile is 0.15 meters. If 3 layers of tiles are laid close to the pool, how many tiles are needed in total (the gap between the tiles is ignored) ．
要在边长为24米的正方形水池边铺上正方形瓷砖，这种瓷砖每边为0.15米，如果紧贴水池往里面铺3层瓷砖，(瓷砖之间的空隙忽略不计)共要瓷砖多少块．
<gadget id="calculator">24 / 0.15</gadget>
<output>160</output>

<gadget id="calculator">160 * 4</gadget>
<output>640</output>

<gadget id="calculator">640 - 4</gadget>
<output>636</output>

<gadget id="calculator">160 - 2</gadget>
<output>158</output>

<gadget id="calculator">158 * 4</gadget>
<output>632</output>

<gadget id="calculator">632 - 4</gadget>
<output>628</output>

<gadget id="calculator">160 - 4</gadget>
<output>156</output>

<gadget id="calculator">156 * 4</gadget>
<output>624</output>

<gadget id="calculator">624 - 4</gadget>
<output>620</output>

<gadget id="calculator">636 + 628 + 620</gadget>
<output>1_884</output>

<result>1_884</result>