```python
prize_pool = 500
current_question = 1

print("Who Wants To Be A Millionaire?            Question {}/15".format(current_question))
print("Current Prize Pool: ${}".format(prize_pool))
print("Question: In what country is Mount Everest located?")
print("a. Nepal\nb. Tibet\nc. India\nd. China")
answer = input("Your answer: ")
if answer.lower() == 'a':
    prize_pool += 500
    current_question += 1
    print("Correct! You won ${}.".format(prize_pool))
    print("Who Wants To Be A Millionaire?            Question {}/15".format(current_question))
    print("Current Prize Pool: ${}".format(prize_pool))
    print("Question: In the game of chess, how many pawns does each player start with?")
    print("a. 4\nb. 6\nc. 8\nd. 10")
    answer = input("Your answer: ")
    if answer.lower() == 'c':
        prize_pool += 1000
        current_question += 1
        print("Correct! You won ${}.".format(prize_pool))
        print("Who Wants To Be A Millionaire?            Question {}/15".format(current_question))
        print("Current Prize Pool: ${}".format(prize_pool))
        print("Question: What is the area of a circle with radius 5 cm?")
        print("a. 5π cm^2\nb. 25π cm^2\nc. 50π cm^2\nd. 100π cm^2")
        answer = input("Your answer: ")
        if answer.lower() == 'b':
            prize_pool += 2000
            current_question += 1
            print("Correct! You won ${}.".format(prize_pool))
            print("Who Wants To Be A Millionaire?            Question {}/15".format(current_question))
            print("Current Prize Pool: ${}".format(prize_pool))
            print("Question: What is the main ingredient in hummus?")
            print("a. Chickpeas\nb. Lentils\nc. Black beans\nd. Kidney beans")
            answer = input("Your answer: ")
            if answer.lower() == 'a':
                prize_pool += 3000
                current_question += 1
                print("Correct! You won ${}.".format(prize_pool))
                print("Who Wants To Be A Millionaire?            Question {}/15".format(current_question))
                print("Current Prize Pool: ${}".format(prize_pool))
                print("Question: What is the world's fastest land animal?")
                print("a. Cheetah\nb. Lion\nc. Elephant\nd. Rhino")
                answer = input("Your answer: ")
                if answer.lower() == 'a':
                    prize_pool += 5000
                    current_question += 1
                    print("Correct! You won ${}.".format(prize_pool))
                    print("Who Wants To Be A Millionaire?            Question {}/15".format(current_question))
                    print("Current Prize Pool: ${}".format(prize_pool))
                    print("Question: Who sang the hit song 'Uptown Funk' in 2014?")
                    print("a. Justin Timberlake\nb. Bruno Mars\nc. Pharrell Williams\nd. Ed Sheeran")
                    answer = input("Your answer: ")
```
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