title: Add trailing zeroes to line in notepad++
body: <p>I have a file containing (hundreds) of blocks of numbers like below;</p>
  
  <p>This one is fine (16x20, correct number of rows and columns)</p>
  
  <pre><code>11111111111111111110
  16666616666666661110
  16111616111111162610
  16111646111663132610
  16162616261623132610
  16162313261623132610
  16162313261623132610
  16162313261623132610
  16162313261623132610
  16162313261623132610
  16162313261623132610
  16162313261626132610
  16166313661116632610
  16111111111116132610
  16666666666666136610
  11111111111111111110
  </code></pre>
  
  <p>This one needs to be padded with trailing zeroes so it is (16x20)</p>
  
  <pre><code>111111111111111111
  166616666666663661
  166611111111111661
  166666366663661661
  113161111111161611
  1316166666616161
  1616162262616161
  11616166112616161
  16616166116616161
  16616162262616161
  16616166266616161
  16616111161116161
  1661666666666616111
  1661666166163366661
  1641666166166613661
  1111111111111111111
  </code></pre>
  
  <p>I would like to pad them with zeroes so they are all like the first example. I'm aware of the regular expressions feature in notepad++ but am struggling to get it to work. I appreciate any help given.</p>