for(i=1; i<=6;i++){
            places = place+i;
            mRef.child(place+i).addListenerForSingleValueEvent(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {


                    if (dataSnapshot.child(address).getKey().equals(address)) {
                        Log.d(TAG,"key: "+dataSnapshot.getKey()+"i: "+i);


                    }

                }

                @Override
                public void onCancelled(DatabaseError databaseError) {

                }
            });
        }