She walked her dog 1 13/20 more miles, I think you may want to check the math but what I did was 2 1/5 times 1 3/4 which is 3 17/20 then I subtracted that from 2 1/5 to get 1 13/20.
It’s the first box goes to the 3rd missing thing and the second goes to the 4th and the 3rd goes to the 1st and 4th goes to the 2nd I think if that makes sense