Trello dev challenge

trello.js

// Solution by Alain Gilbert
// https://trello.com/jobs/developer

var letters = 'acdegilmnoprstuw';
var expected = 956446786872726;
var answer = '';

for (var i = 9; i >= 0; i--) {
  var mult = Math.pow(37, i);
  var position = Math.floor(expected / mult);
  expected -= mult * position;
  answer += letters[position];
}

console.log(answer.substr(1)); // trellises