Please help me out with the exponentiation end of module project

Question

I've written it in different ways, of which I see it correct but it didn't work.
a = input()
result = a*(2**30)
print (result)

Answer 1

num was already set and its value was 1.000.000$ (or 0.01).
So you may use it and avoid input() function.

Answer 2

Thanks Stefan it worked, but its really funny why it didn't work.

Answer 3

Try this
It should work
num = 0.01 * (2**30)
print(num)

Answer 4

res = 0.01*(2**30)
print(res)

Answer 5

Stefan
why you don't use 1000000$??, and why you use 2??, Thanks 😊