room needs 240 square bricks with an area of 9 square decimeters to pave the floor. If the floor is paved with bricks with a side length of 4 decimeters, how many bricks are needed?
一个房间，用面积为9平方分米的方砖铺地需240块，如果改用边长4分米的砖铺地，需多少块？
<gadget id="calculator">9 * 240</gadget>
<output>2_160</output>

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

<gadget id="calculator">2_160 / 16</gadget>
<output>135</output>

<result>135</result>