It takes 450 yuan to pave a meeting room with square bricks with a side length of 4 decimeters. How many bricks are needed to pave the floor with square bricks with a side length of 3 decimeters?
用边长4分米的方砖铺一间会议室，需要450块，若要用边长3分米的方砖铺地，需要多少块．
<gadget id="calculator">4 * 4 * 450</gadget>
<output>7_200</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">7_200 / 9</gadget>
<output>800</output>

<result>800</result>