XDLXDL
A three-digit number with every digit equal to n, divided by the sum of its digits: nnn/(n + n + n). The numerator is 111·n and the denominator 3n, so n cancels and the quotient is 111/3 = 37 for every digit from 1 to 9. With k repeated digits the quotient is Rₖ/k, where Rₖ = · XDL