Three times as many days as a typical person has fingers and toes is 3*20=60 days
Three days per instance of bullying is 60/3=20 instances of bullying.
Kris has been suspended for bullying many times.  For every instance of bullying, she was suspended for 3 days.  If she has been suspended for three times as many days as a typical person has fingers and toes, how many instances of bullying is she responsible for?