First thing to consider is that, almost always, computer stuff starts counting things at zero, not one. Zero is a number, it has value. In computers, having 'nothing' and having 'zero' is not the same thing. This is why 77_Scout comes up with 38h instead of 70h - there's a place being dropped.
Also, Windows has a calculator built in (you probably know already), but it does hex, binary, and other numbering systems...the diagram below shows how it works:
Calc menu View > Programmer Radio button group middle left > Bin Input the number you want converted, starting at zero (R>L) for first core (in this case 1110000) Radio button middle left > Hex (number displayed is changed to hex; in this case 70)
