BNB interest

When I carry out the following operation, the answer returns a commission of 0.00043125 but when checking the funds in the wallet I notice that 0.00000783 was added in the interest column of bnb, nowhere in the answer do I find those 0.00000783 interest bnb, where did those interests come from? How do I calculate or consult them? And finally, how do I pay them?

This is the operation I did with 15usdt in the BTCUSDT pair

var mkOrder = await marketOrder('MARGIN', 'BTCUSDT', 'SELL', quantity, null, 'MARGIN_BUY', d => console.log(d))

the commission is trading fee, you should find them from

Please let me know if you have further concerns. :slight_smile: