Sport Science International is considering launching a new sports drink Devil$-$Ade. With its improved formula, Devil$-$Ade is expected to penetrate the market quickly. However, Devil$-$Ade is likely to appeal to the consumers who currently buy the company$$s existing product Warrior$-$Ade. The sales volume of Warrior$-$Ade is currently $20$ million bottles per year and is expected to decline by $20\%$ when Devil$-$Ade is introduced to the market. The unit sale price and the unit cost of Warrior$-$Ade are $$3\mathrm{.}5$ and $$2\mathrm{.}0,$ respectively. Estimate the opportunity cost per year $($i$.$e$.,$ forgone cash flow from the existing product$)$ by taking into account a marginal tax rate of $25\%$ for Sport Science International. Answer $($show the steps$/$calculation toward your results$)$: