try 1/(998001)
Edit:in fact try 1/(999.....9)^2
the decimals will allways be every single number with N digits, (where N is the number of nines) exept for the one before last
in fact in your example 3^4 is 9^2
therefore it repeats eveysingle 1 digit number: ".012345679" exept for 8 because its the one before last
in the example i gave it will go 0.000001002003004.... 996997999 and repeat
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