A rectangular classroom with a length of 18 meters and a width of 4 meters is paved with square bricks with an area of 3 square meters. How many square bricks are needed?
一个长方形的教室，长18米，宽4米，用面积为3平方米的方砖铺地，需要这样的方砖多少块？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">18 * (4/3)</gadget>
<output>24</output>

<result>24</result>