private static void expandNumberAt(String numberString,int startIndex,WordRelation wordRelation,Item tokenItem){
  expandNumber(numberString.substring(startIndex,numberString.length()),wordRelation,tokenItem);
}

private static void expandNumberAt ( String numberString , int startIndex , WordRelation wordRelation , Item tokenItem ) { expandNumber ( numberString . substring ( startIndex , numberString . length ( ) ) , wordRelation , tokenItem ) ; }
returns the number string list of the given string starting at the given index . e . g . , expandnumberat ( " 1100 " , 1 ) gives " one hundred "
