A one-story house is paved with square bricks with an area of 4 square decimeters, and 108 bricks are needed to cover it exactly. If you use square bricks with an area of 9 square decimeters instead, how many bricks are needed to cover them? (answer with ratio)
一间平房，用面积是4平方分米的方砖铺地，需要108块正好铺满．如果改用面积是9平方分米的方砖来铺，需要多少块才能铺满？(用比例解答)
<gadget id="calculator">4 * 108</gadget>
<output>432</output>

<gadget id="calculator">432 / 9</gadget>
<output>48</output>

<result>48</result>