The master worker paved the floor with square bricks. Using square bricks with a side length of 3 decimeters, 480 pieces can be paved. If you use square bricks with a side length of 4 decimeters, how many pieces are needed?
工人师傅用方砖铺地．用边长3分米的方砖，480块可以铺完．如果用边长4分米的方砖，需要多少块？
<gadget id="calculator">3 * 3 * 480</gadget>
<output>4_320</output>

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

<gadget id="calculator">4_320 / 16</gadget>
<output>270</output>

<result>270</result>