It is necessary to use the same kind of square bricks to pave the floor of two rooms of different sizes. It is known that the large room is 17 square meters and shares 68 square bricks. According to this calculation, how many such square bricks should be prepared to finish paving the small room of 12 square meters? brick?
要用同一种方砖铺大小两个房间的地面，已知大房间17平方米，共用方砖68块，照这样计算，铺完12平方米的小房间，至少还要准备多少块这样的方砖？
<gadget id="calculator">68 / 17</gadget>
<output>4</output>

<gadget id="calculator">4 * 12</gadget>
<output>48</output>

<result>48</result>