Query on Long Term Capital Gain Tax On Sale Of Residential Plot

Dear Sir,

I had purchased a residential land plot in May 1997 in Satara area at Aurangabad (Maharashtra). The registration deed was at a price of Rs 25000/-

I am selling it this month for a registration value of around Rs 16,000,00/-

The market price is different from the registration value both in buying and selling.

What would be the capital gains accrued in this transaction? what is the capital gains tax liability and how can it be saved entirely? what are the options available?

Could you please advise ASAP?

Best