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Appending digits

Description

\(a\) is formed by appending the digit 1 to the front of an integer.

\(b\) is formed by appending the digit 8 to the end of an integer.

 


Question

Given that, \(b = 2a\), find the sum of all possible values of \(N < 1,000,000\).


Given that, \(b = 2a\), find the sum of all possible values of \(N < 1,000,000\).