Very helpful. I submitted this to a contest. Hope it wins.

IT’S SIMPLE! 1,469 I GOT ALL THESE NEW GUESTS EACH DAY! EACH DAY HAVING ONE MORE! HOW MANY IF THEM CAME IN ALL? HOW?!? JUST DO THIS! TELL ME! JUST MULTIPLY THE NUMBER BY 1,470 (LIKE N+1) THEN DIVIDE BY 2! THE ANSWER SHOULD BE 1,079,715; WOW! THANKS! YOU’RE WELCOME