Capital gain tax

What is gain tax and if i sold my property in 1.5 million which i buy in 1 million after 1.5 year to os py gain tax kitna ho ga kindly guide me thanks.

7.5% of 5 lacs minus tax paid at the time of transaction. CGT u wil pay at the time of filing annual income tax return.

Sir 40 lac sy less amount py b cgt apply ho ga?