leisure plaza needs 720 square bricks with a side length of 0.5 meters to pave the floor. If the square bricks with a side length of 0.6 meters are used instead, how many bricks are needed? (Solve with ratio)
某休闲广场备用边长为0.5米的方砖铺地，需要720块，若改用边长为0.6米的方砖，需要多少砖？(用比例解)
<gadget id="calculator">0.5 * 0.5 * 720</gadget>
<output>180</output>

<gadget id="calculator">0.6 * 0.6</gadget>
<output>0.36</output>

<gadget id="calculator">180 / 0.36</gadget>
<output>500</output>

<result>500</result>