Capital gain tax for senior citizen aged 72

A share of  Rs  8 lacks from selling old joint family property has come to  in the month of Jan 2018. I am a female senior citizen having no income. Can anybody advise how much capital gain tax I have to give. The indexed value of property is shown as 1.9 lacks.

If the indexed value of property is not claimed , will the tax rate be different. 

I depend only on interest income and would like to reduce tax burden. Kindly advise.