The living room of Lan Lan’s house is 54 decimeters long and 42 decimeters wide. If you want to use square floor tiles whose side length is an integral number of decimeters to cover the living room (the floor tiles used are all whole blocks), you can choose the maximum side length Rice floor tiles?
兰兰家的客厅长54分米、宽42分米，如果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)，可以选择边长最大是多少分米的地砖？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>