Typically, employees in a local company are required to work no more than $40\mathrm{.}00$ hours a week. Their regular hourly rate is $$17\mathrm{.}89.$ If an employee works overtime $($more than $40\mathrm{.}00$ hours a week$),$ the hourly rate is $$37\mathrm{.}89$ for each extra hour. The table shows the working hours of employees of this company.

Calculate the WEEKLY wage $($the wage they would earn in a week$),$ using the IF function. Do NOT hard code values; instead use cell references to refer to fixed values such as $$17\mathrm{.}89.$ In other words, use absolute and relative referencing appropriately.