The school hall is 6 meters wide and 9 meters long. If the floor tiles are 3 decimeters long, at least how many pieces are needed?
学校大厅宽6米，长9米，如果铺边长3分米的地砖至少需要多少块？
<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">9 / (9/100)</gadget>
<output>100</output>

<gadget id="calculator">6 * 100</gadget>
<output>600</output>

<result>600</result>