ETF expense ratio

Hi,

I find following etfs awesome in terms of expense ratio and diversification.
ETFs Expense
M100 0.20
N100 0.50
HDFCSENETF 0.05

I wonder how these expenses will get debited from my purchase as I didn’t find any. If I buy it at x and sell it at y, x-y is my gain. I don’t find this expense being adjusted in my trade anywhere. Do you know where?

Thanks.

Your traded price/nav includes expenses (ratio) as mentioned by the mf.