In Exercises $61$ through $68,$ write a program that has one line of code for each step.

$61.$ Calculate Profit The following steps calculate a company's profit.

$($a$)$ Create the variable revenue and assign it the value $98,456.$

$($b$)$ Create the variable costs and assign it the value $45,000.$

$($c$)$ Create the variable profit and assign it the difference between the values of the variables revenue and costs.

$($d$)$ Display the value of the variable profit.