Scrabble–if you lay down a seven letter word on a triple point square, do the 50 bonus points get trippled?

For example, let’s say you laid down all of your tiles for a 7 letter word (a bingo) that was 20 points on the triple square. Do you get 20 times 3 for 60 points plus the bonus 50 for a total of 110 points or do you get 20 plus 50 times 3 for a total of 210 points? Does anyone know that answer to this for sure with a source they can send me? I’ve been playing Scrabble for 12 years and this is the one situation that always confuses me…thanks for your help!