Hi,
Here is a tutorial that explain hexadecimal https://ffhacktics.com/tutorials.php?id=11. At the beginning, you'll see all the value going up.
So after 9 you'll go to A then B until F, and then go back to 0. (So 8 + 4 = C). Your windows calculator can do the job too if you configure it to programmer (not sure how it's called in english). Then it will give you access to hexadecimal operations.
Anyway, if you want to affect all elements the value will be FF.
Here is a tutorial that explain hexadecimal https://ffhacktics.com/tutorials.php?id=11. At the beginning, you'll see all the value going up.
So after 9 you'll go to A then B until F, and then go back to 0. (So 8 + 4 = C). Your windows calculator can do the job too if you configure it to programmer (not sure how it's called in english). Then it will give you access to hexadecimal operations.
Anyway, if you want to affect all elements the value will be FF.