Using the same square bricks to pave the floor, 540 bricks are needed to pave 18m**2, how many bricks are needed to pave 32m**2? (Solve with positive and negative proportions)
用同样的方砖铺地，铺18m**2需要540块，如果铺32m**2要用多少块？(用正反比例解)
<gadget id="calculator">540 * 32</gadget>
<output>17_280</output>

<gadget id="calculator">17_280 / 18</gadget>
<output>960</output>

<result>960</result>