A pool is 20 meters long, 10 meters wide, and 2 meters deep. If square tiles with a side length of 1 decimeter are built around and on the bottom of the pool, how many such tiles are needed?
一个水池长20米，宽10米，深2米，在这个水池的四周和底面砌上边长为1分米的正方形瓷砖，共需要多少块这样的瓷砖？
<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<gadget id="calculator">20 * 2 * 2</gadget>
<output>80</output>

<gadget id="calculator">10 * 2 * 2</gadget>
<output>40</output>

<gadget id="calculator">200 + 80 + 40</gadget>
<output>320</output>

<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">1 * (1/100)</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">320 / (1/100)</gadget>
<output>32_000</output>

<result>32_000</result>