A classroom is 9 meters long and 6 meters wide. The floor is paved with square bricks. The side length of each brick is 30 cm. How many bricks are needed in total?
一间教室，长9米，宽6米，用正方形砖铺地，每块砖的边长是30厘米，一共需要多少块砖？
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">0.3 * 0.3</gadget>
<output>0.09</output>

<gadget id="calculator">54 / 0.09</gadget>
<output>600</output>

<result>600</result>