function fetchData() {
  var dolarTable = UrlFetchApp.fetch(url, options).getContentText();
  var match = dolarTable.match(/Dólar(.*)s+(.*)s+(.*)s+(.*)s+(.*)s+(.*)s+(</tr>)/);
  var string = match[0].replace(/(rn|n|r)/gm," ");
  string = string.replace(/s/g, "");
  var dollar = string.search("\$");
  var value = string.indexOf("$", dollar + 1);
  var substrings = string.substring(value);

  var almostThere = substrings.substring(0).indexOf("<");
  var number = substrings.substring(0,almostThere);

}