Design and develop a program that calculates total pay based on hourly rate. For example, if a user enters $10$ hours and has an hourly rate of $8\mathrm{.}50,$ then your program should calculate the total pay $85\mathrm{.}0($i$.$e$.,$ #hours $*$ hourly pay rate$).$ However, if a person works over $40$ hours, then, any hour after $40$ hours should be $1\mathrm{.}5$ times the regular hourly rate.

For example, $50$ hours with an hourly rate of $8\mathrm{.}5$ should be $(40*8\mathrm{.}5+(10*(8\mathrm{.}5*1\mathrm{.}5)))=467\mathrm{.}5$