A cuboid column has a cross-section of a square with side length 5 decimeters and a height of 4 meters. How many square tiles with a side length of 2 decimeters are needed to stick around the pillar?
一根长方体柱子，横截面是边长5分米的正方形，高4米．要在柱子的四周粘贴边长2分米的正方形瓷砖，一共需要多少块这样的瓷砖？
<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">40 * 5 * 1</gadget>
<output>200</output>

<result>200</result>