edit: i forgot to add that if you have a number like 499999989, its ok. your bonus is not seven nines. you can multiply the nines, but only the ones in a row are accounted for. so the calculation would be 4+8+(9^7)+999999.
if i am going to take a guess, my highest scoring id is probably 477777777. that scores 83,542,582 points. fun fact: i was not even an id sniper when i made the project. i was just about to create a game.