Bazman is an electronics retailer and provided the following select financial data (assume income statement items are for the full year): ($ in millions) December 31, 2020 Gross profit $140 Operating expenses 78 Accrued expenses 19 Prepaid wages 15 Depreciation & amortization expense 12 Prepaid rent 5 Stock based compensation expense 4 Other comprehensive income 5 Tax rate 25% Net income 41 Based on the information provided, what was operating income during 2020?