ADS and ACOG in R6 use the same sensitivity but scale completely different to each other. So you can only calculate sensitivity for one of them, while the other one will just have to be what it is with the settings you get.
Your conversion is correct except for the FOV in Apex. If you have it set to 104 in-game, set the FOV Type to Multi instead and enter 104. The difference is barely anything, but if you want it to be perfect, that will show you the exact FOV.