The living room of Mr. Zhang’s house is a rectangle with a length of 54 decimeters and a width of 48 decimeters. He wants to cover the living room with square floor tiles whose side length is an integral number of decimeters (the floor tiles used are all in one piece). Among the floor tiles that can be selected, what is the maximum side length in decimeters?
张老师家的客厅是一个长方形，长是54分米，宽48分米．他要用边长是整分米数的正方形地砖把客厅铺满(使用的地砖都是整块)．可以选择的地砖中，边长最大是几分米？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>