Sunday, October 13, 2019

CHALLENGE 1178.4

9 99 9991 999 999 91 99 991 99 99 9991
99 991 99 9 991 9 999 91 
99 9 9991 9 999 91 999 999 9991
9 99 991 99 9 9991 9 9 991
99 999 9991 9 99 991 99 9 991
1799

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