A sidewalk is 120 meters long and 3 meters wide, and is paved with square cement bricks with an area of 9 square decimeters. How many such cement bricks are needed?
一条人行道长120米，宽3米，用面积9平方分米的正方形水泥砖铺地，需要这样的水泥砖多少块？
<gadget id="calculator">100 / 9</gadget>
<output>100/9 = around 11.111111</output>

<gadget id="calculator">120 * 3 * (100/9)</gadget>
<output>4_000</output>

<result>4_000</result>