Install tiles in a cuboid reservoir with a length of 20 meters, a width of 8 meters, and a depth of 1.5 meters. The tiles are squares with a side length of 0.2 meters. How many tiles are needed in total?
在一个长20米，宽8米，深1.5米的长方体蓄水池里面贴瓷砖，瓷砖是边长为0.2米的正方形，贴完共需瓷砖多少块？
<gadget id="calculator">20 * 8</gadget>
<output>160</output>

<gadget id="calculator">20 * 1.5 * 2</gadget>
<output>60</output>

<gadget id="calculator">8 * 1.5 * 2</gadget>
<output>24</output>

<gadget id="calculator">160 + 60 + 24</gadget>
<output>244</output>

<gadget id="calculator">0.2 * 0.2</gadget>
<output>0.04</output>

<gadget id="calculator">244 / 0.04</gadget>
<output>6_100</output>

<result>6_100</result>