The Armidale Manufacturing Ltd $($AML$)2023$ books contained the following information.

Total Sales Revenue amounted to

$$24,747$

Manufacturing costs $($Variable$)$

$$11,191$

Other costs $($non$-$manufacturing, Variable$)$

$$9,019$

Manufacturing costs $($Fixed$)$

$$1,839$

Other costs $($non$-$manufacturing, Fixed$)$

$$2,741$

Required: Work out the following assuming all situations below are independent of each other and showing all necessary calculations$/$working out $($round final answers to $2$ decimal places, where applicable$)$:

a$.$ AML$$s contribution margin for the year $2023.$

b$.$ AML$$s contribution margin percentage$/$CM Ratio for the year $2023.$

c$.$ AML$$s Gross margin for the year $2023.$

d$.$ AML$$s Gross Margin percentage $($or GM Ratio$)$ for the year $2023.$

e$.$ AML$$s Operating Profit for the year $2023.$