In 2021, Company D has taxable income of $35,700 prior to consideration of any net operating loss. In 2017, the company incurred a net operating loss of $5,100. It elected to waive the carryback period. In 2018, the company incurred a net operating loss of $40,800. In 2019 and 2020, the company had net income of zero. Determine 2021 taxable income.