8 and 3 fourths divided by 3 and one half equals what

8.75/3.5 = 2.5

8 3/4   =  35/4

3 1/2 =  7/2

So

(35/4) / (7/2)   invert the second fraction and multiply

(35/4) * (2/7)  =   swap denominators

(35/7) * ( 2/4)  =

5 * (1/2)  =

5/2   or  2.5   [as Rarinstraw said]