Question about list and while function

[jefsummers]

For the more general answer, how about

a = int(input("Enter a: "))
b = int(input("Enter b: "))

answer = [a * b - x for x in range(1,b+1)]
answer.extend([0] * (10-b))

print(answer)

Output:
Enter a: 3
Enter b: 6
[17, 16, 15, 14, 13, 12, 0, 0, 0, 0]

That works for any positive value of b < 10