by a mile vs hands down

by a mile

hands down

adv
  • without question; undoubtedly 

  • without much effort; easily 

  • by a large margin (in a game or contest) 

  • Used other than figuratively or idiomatically: see hands, down. 

How often have the words by a mile and hands down occurred in a corpus of books? (source: Google Ngram Viewer )