Calculating Capital Gains?

[CONFUSED]

While calculating gains should we exclude brokerage and other charges from our profit.
Example - I bought 1 share in 50 rs and sold it in 70 rs. So the profit is 20 Rs or 20 - brokerage and other charges.

Net Profit/Loss = [No. of shares*(Sell Price - Buy Price)] - (Brokerage + Taxes)

So for any purpose, say for tax filing, you will have to give your profit after deducting your brokerage and other charges.