6. (3 points) Cut a rectangular paper that is 11 cm long and 7 cm wide along a straight line, each time you must cut out a square. This way, the maximum number of squares you can cut out is $\qquad$.

将上面的文本翻译成英文，请保留源文本的换行和格式，直接输出翻译结果。
6. (3 points) Cut a rectangular paper that is 11 cm long and 7 cm wide along a straight line, each time you must cut out a square. This way, the maximum number of squares you can cut out is $\qquad$.

【Solution】According to the analysis of the problem:
Answer: A total of 6 squares can be cut out.
Therefore, the answer is: 6.