A house needs to be paved with square bricks. 96 square bricks with an area of 9 square decimeters are needed. How many square bricks with a side length of 2 decimeters are used instead? (Solve with ratio)
一间房子要用方砖铺地．用面积是9平方分米的方砖需要96块．如果改用边长为2分米的方砖，需要多少块？(用比例解)
<gadget id="calculator">96 * 9</gadget>
<output>864</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">864 / 4</gadget>
<output>216</output>

<result>216</result>