There is a rectangular piece of paper with a length of 70 cm and a width of 50 cm. If you want to cut this rectangular paper into several squares of the same size without any surplus, what is the maximum side length of the cut squares?
有一张长方形纸，长70cm，宽50cm．如果要将这张长方形纸剪成若干同样大小的正方形而没有剩余，剪出的小正方形的边长最大是几厘米？
<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<result>10</result>