There is a rectangular piece of cardboard, 70 cm long and 50 cm wide. If it is to be cut into several squares of the same size without remaining, what is the maximum side length of the cut squares?
有一张长方形硬纸片，长70厘米，宽50厘米．如果要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>