Operating cash inflows A firm is considering renewing its equipment to meet increased demand for its product. The cost of equipment modifications is $$1\mathrm{.}90$ million plus $$100,000$ in installation costs. The firm will depreciate the equipment modifications under MACRS, using a $5-$year recovery period $($see table $).$ Additional sales revenue from the renewal should amount to $$1\mathrm{.}20$ million per year, and additional operating expenses and other costs $($excluding depreciation and interest$)$ will amount to $40\%$ of the additional sales. The firm is subject to a tax rate of $21\%.($Note: Answer the following questions for each of the next $6$ years.$)$

a$.$ What net incremental earnings before depreciation, interest, and taxes will result from the renewal?

b$.$ What net incremental operating profits after taxes will result from the renewal?

c$.$ What net incremental operating cash inflows will result from the renewal?