Gill and Molly are married and for 2020, they each made $50,000 and $30,000 of taxable income in wages, respectively. In addition, Molly received $13,000 of interest income from a municipal bond investment that is not taxable.

Fill in the blank: Ignoring your answers to prior questions, if you assume Gill and Molly file jointly as a married couple for 2020 and their total income is $120,000 and their total taxable income is $108,000, their total tax is $____________.