8 and 9/16 devided by 2

\(8\frac9{16}\div2\\~\\ =(8+\frac9{16})\div2\\~\\ =(\frac{128}{16}+\frac9{16})\div2 \\~\\ =\frac{137}{16}\div2\\~\\ =\frac{137}{16}\,*\,\frac12 \\~\\ =\frac{137}{32} \\~\\ = 4.28125\)

Also, you can type it into the calculator like this:      (8+9/16)/2