Create the follow program using Raptor $($if you do with both Raptor and Python correctly, you will get $20$ bonus points for python work$).$ Use the concepts, techniques and good programming practices that you have learned in the course $($example: using modular structure, using input validations....$).$

A retail price for each basket ball is $$2\mathrm{.}99/$each$.$ You have to write a program to figure it out the final bill for each customer after discount $($if applicable$)$

$+$ Customers buy less than $10$ balls, there will be no discount.

$+$ Customers buy $>=10$ and less than $20$ balls, there will be $5\%$ discount.

$+$ Customers buy $>=20$ and less than $30$ balls, there will be $10\%$ discount.

$+$ Customers buy $>=30$ and less than $40$ balls, there will be $15\%$ discount.

$+$ Customers buy $>=40$ balls and less than $50$ balls, there will be $20\%$ discount.

$+$ Customers buy $>=50$ balls and less than $60$ balls, there will be $25\%$ discount.

$+$ Customers buy $>=60$ balls, there will be $30\%$ discount.