#Excel VBA, 90 bytes
Excel VBA, 90 bytes
An anonymous VBE immediate window function that takes input from the range [A1] and outputs to the VBE immediate window.
For i=1To 7Step 2:[B1]=i:?[Hex2Dec(Mid(A1,B1,2))]/IIf(i=7,256,1)&""+IIf(i<7,", ","");:Next