There are two rooms of the same size. One room is paved with square bricks with a side length of 4 decimeters, and 75 of them are exactly paved. The other room is planned to be paved with square bricks with an area of 25 square decimeters. How many such square bricks are needed?
有两个一样大的房间，一个房间用边长是4分米的方砖，75块正好铺满，另一个房间打算用面积25平方分米的方砖铺，需要多少块这样的方砖？
<gadget id="calculator">75 / 25</gadget>
<output>3</output>

<gadget id="calculator">4 * 4 * 3</gadget>
<output>48</output>

<result>48</result>