yes it helps, but 0% is not meaning exact zero as it might be rounded up, i mean it might be 0.01% for example = 0% after rounding it up to one digit . in all means, there is interest rate is being added, i know it is around 0.017/450x100% = 0.0037% daily for my steem, and it will be the same as sbd interest ratio ( steem exchange price in both sides of / = 1 )

thank you dear

wishing you long prospective witness