Beibei cuts the same square out of rectangular paper with a length of 1.2 meters and a width of 8 decimeters. There must be no surplus. What is the side length of the largest square she can cut out?
贝贝用长1.2米，宽8分米的长方形纸剪相同的正方形，不许有剩余，她能剪出的最大正方形的边长是多少分米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>