For a room, 432 pieces are needed to pave the floor with square bricks with an area of 9 decimeters. If the floor is paved with square bricks with a side length of 4 decimeters, how many pieces are needed?
一个房间，用面积9平方分米的方砖铺地，需要432块，如果改用边长4分米的方砖铺地，需要多少块？
<gadget id="calculator">9 * 432</gadget>
<output>3_888</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">3_888 / 16</gadget>
<output>243</output>

<result>243</result>