Question: Replacing print in the same line

I have written a program that checks many possible cases of something. In a line of the code I have programmed  that it prints the number of cases checked every 100 cases checked. However when the number is 200, 300, 400, etc, the number is printed in a new line, and I would like just to replace the precceeding number with the new one. Is it possible? How?

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