There is a site paved with square bricks with an area of 9 decimeters square, and 496 bricks are exactly paved. If square bricks with a side length of 4 decimeters are used, how many bricks are needed?
有一块场地用面积9平方分米的方砖铺，496块正好铺满，如果用边长是4分米的方砖，需要多少块？
<gadget id="calculator">496 * 9</gadget>
<output>4_464</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">4_464 / 16</gadget>
<output>279</output>

<result>279</result>