#!/usr/bin/perl -w my $debt = shift || 1000; my $idebt = $debt; my $months = shift || 100; for(1..$months) { $debt += $debt * 0.005; $idebt += ($idebt >> 8) + ($idebt >> 10); # print "$debt\t$idebt\n"; $pct = $idebt * 100 / $debt; printf("%.2d\t$idebt\t%.1d%%\n", $debt, $pct); }