the answer would be 2 1/8.
change the 8 1/2 into an improper fraction[which would become 17/2].
then write down 17/2 ÷4. then change the division sign to a multiplication sign and find the reciprocal of the 4 [which is 1/4 or a quarter].
you then will multiply 17/2 by 1/4 you will get 17/8. change it into a mixed fraction and you will get 2 1/8.