It takes 72,000 yuan for municipal workers to pave the floor of the newly built music square with square bricks with a side length of 5dm.
市政工人给新建的音乐广场铺地砖，用边长为5dm的方砖铺，需要7.2万块，如果改用边长为6dm的方砖铺，需要多少万块？
<gadget id="calculator">5 * 5 * 7.2</gadget>
<output>180</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">180 / 36</gadget>
<output>5</output>

<result>5</result>