text: ff=open("contacts.txt","w")
  fp=open("Date.txt","r")
  while True:
          line = fp.readline()
          con = ' '.join(line.split())
          if con and con.isdigit():
              number=int(con)
              ff.write(str("91"+str(number)+"\n"))
              print(number)
          if not line:
              break