Tongxiang Street Square covers an area of 9 hectares. If square tiles with a side length of 30 cm are used to pave the ground, how many thousands of tiles will be used?
通翔街心广场面积为9公顷，如果用边长为30厘米的正方形花砖铺地，需要用多少万块花砖？
<gadget id="calculator">30 / 100</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">10_000 / (9/100) / 10_000</gadget>
<output>100/9 = around 11.111111</output>

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

<result>100</result>