How to calculate Hourly Rate?

Question $6$Answer

$($Average Annual Salary x On$-$Costs x Overheads x Profit$)/($Productivity x Hours worked$)$

$($Average Annual Salary x On$-$Costs x Overheads x Losses$)/($Productivity x Days worked$)$

$($Average Monthly Salary x On$-$Costs x Overheads x Profit$)/($Productivity x Hours worked$)$

$($Average Annual Salary x On$-$Costs x Expenditures x Profit$)/($Productivity x Hours worked $+$ Hours Rest$)$

$($Fixed Annual Salary x On$-$Costs x Overheads x Profit$)/($Productivity x Hours worked $+$ Hours Rest$)$