To pave a floor with square bricks with a side length of 2 decimeters, 270 bricks are needed. If the ground is paved with square bricks with an area of 9 square decimeters, how many bricks are needed? (Solve with ratio)
用边长2分米的方砖铺一块地面，需要砖270块．如果改用面积为9平方分米的方砖铺这块地面，需要多少块？(用比例解)
<gadget id="calculator">2 * 2 * 270</gadget>
<output>1_080</output>

<gadget id="calculator">1_080 / 9</gadget>
<output>120</output>

<result>120</result>