Contribute correction: 1987 belastingprogramma

  _____      ___               _    _   
 / ____||   / _ \\      ___   | || | || 
/ //---`'  / //\ \\    /   || | || | || 
\ \\___   |  ___  ||  | [] || | \\_/ || 
 \_____|| |_||  |_||   \__ ||  \____//  
  `----`  `-`   `-`     -|_||   `---`   
                         `-`