How can I write a Python Program that Writes a custom function that assigns these rates to properly named constants and then calculates and prints your commission on a sale. The function should also return the commission so you can determine your total commission for a period. The main function should begin by prompting you for the number of cars sold in the period and then start a loop. Inside the loop, the program should: prompt you for the selling price, front-end profit, and back-end profit for the sale. call the custom function with both profits as arguments. After the loop has processed all sales, report your total sales and total commission for the period.

Write the pseudocode for a function that should accept a test score as an argument and return a letter grade for the score (as a String), based on the following grading scale: Score               Letter Grade90-100                      A80 - 89                      B70 - 79                      C60 - 69                      DBelow 60                  F

Creating a function table, python code from the following pictures:

An automated donation machine accepts donations via 10 or 20 bills to a maximum of $990. The machine needs to print a receipt with the donation amount in English, rather than numerically. Complete the following function which converts any number between 10 to 990 dollars to English.NOTE: You may define and use another function if necessary.NOTE: You should use arrays for this task. Use of switch statements or very long if/else if statements for printing is not allowed. However, using if/else if/else statements for the logic of your algorithm is permitted.NOTE: This function returns the result, and does not print it. Make sure the result is not lost when you return. Example function input and output (donation is 110):Input: 110Output: “one hundred ten dollars” string convertToEnglish (int donation);  in C++   #include <iostream>#include <string>using namespace std; string convertToEnglish (int donation); int main() {int donation;cin>>donation;…