Based on this information please answer part $4($first pic is the question and second pic is the stuff that I need solution for, no explanation needed, just answers please$)$:

Devon Inc. has developed a powerful efficient snow blower that is significantly less polluting than existing snow blowers currently on the market. The company spent $\backslash (\backslash$$ $2,500,000\backslash )$ developing this product and the marketing department spent another $\backslash (\backslash$$ $350,000\backslash )$ to assess the market demand. It would cost $\backslash (\backslash$$ $25\backslash )$ million at Year $0$ to buy the equipment necessary to manufacture the efficient snow blower. The project would require net working capital at the beginning of each year equal to $\backslash (20\backslash \%\backslash )$ of sales $($NOWC$0\backslash (=\backslash$mathbf$\{20\backslash \%\}\backslash )($Sales$1),$ NOWC$1\backslash (=\backslash$mathbf$\{20\backslash \%\}\backslash )($Sales$2),$ etc.$).$ The efficient snow blowers would sell for $\backslash (\backslash$$ $3,500\backslash )$ per unit, and the company believes that variable costs would amount to $\backslash (\backslash$$ $990\backslash )$ per unit. The company expects that the sales price and variable costs would increase at the inflation rate of $\backslash (4\backslash \%\backslash )$ after year $1.$ The company's non$-$variable costs would be $\backslash (\backslash$$ $800,000\backslash )$ in Year $1$ and are expected to increase with inflation. The efficient snow blower project would have a life of $4$ years. If the project is undertaken, it must be continued for the entire $4$ years. Also, the project is expected to be of average risk. The firm believes it could sell $3,500$ units per year. The equipment would be depreciated using a CCA rate of $\backslash (30\backslash \%\backslash ).$ The estimated market value of the equipment at the end of the project's $4-$year life is its undepreciated capital cost $($i$.$e$.$ book value$)$ at the end of year $4.$ The company has other assets in this asset class. Toefield Inc.$\text{'}$s federal$-$plusprovincial tax rate is $\backslash (\backslash$mathbf$\{30\backslash \%\}\backslash ).$ Its cost of capital is $\backslash (7\backslash \%\backslash )$ for average risk projects. Low$-$risk projects are evaluated with a WACC of $\backslash (6\backslash \%\backslash ),$ and high$-$risk projects at $\backslash (10\backslash \%\backslash ).$ Assume that the half$-$year rule applies to the CCA.