Use the same square bricks to pave the floor, and use 540 square bricks with a side length of 2 decimeters. If you replace them with square bricks with a side length of 3 decimeters, how many pieces are needed (use a ratio)
用同样的方砖铺地，用边长2分米的方砖540块，如果收改用边长3分米的方砖，需要多少块(用比例解)
<gadget id="calculator">2 * 2 * 540</gadget>
<output>2_160</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">2_160 / 9</gadget>
<output>240</output>

<result>240</result>