A classroom is 9 meters long and 6 meters wide. If you use square bricks with a side length of 3 decimeters to pave the floor, how many bricks are needed?
一间教室长9米，宽6米，如果用边长3分米的方砖铺地，需要多少块？
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * (3/10)</gadget>
<output>9/100 = around 0.09</output>

<gadget id="calculator">54 / (9/100)</gadget>
<output>600</output>

<result>600</result>