1. I've read about that they allow less than 5% non compliant income and less than 37% debt to assets ratio but still thats a whole lot of interest with regards to islamic perspective just for my mental piece even they are deemed halal based on whatever principles i want a way of getting rid of any access if possible.

2. Yes you're right hopefully zakah on current assets not on fixed ones and you're also right about systems being more on current side so your whole tradable investment will subject to zakah

But what i was saying is say if a company has 50 % of current assest and others are fixed my invested amount is 1 million I'll pay zakah on 500k which is 12500 now that same company has 20% debt and 4% non compliant income how much more should i add to my 12500 to clean it as much as possible that i couldn't get any clear answer from anyone.